Python Rasterio Merge

Using Python to execute merge of rasters. Testing this in python console. I want to know how many users have joined in the month of October?. To use pytests tmp_path, instead of polluting the working directory. ndarray and a mask. 0 - a Python package on PyPI - Libraries. GeoPandas builds on mature, stable and widely used packages (Pandas, shapely, etc). QGIS es un excelente software para la manipulación de archivos espaciales y a ello se le suma Python como un lenguaje de programación que está siendo usado para múltiples fines, presentándose así el caso de Python en QGIS, que de una manera rápida mediante scripts podemos tener visualizaciones y res. Packaging Python Projects¶. I’m very glad to read this article. As a library, it presents a single raster abstract data model and single vector abstract data model to the calling application for all supported formats. Rasterio employs GDAL under the hood for file I/O and raster formatting. The dataset has 10 million rows and 33 columns - but the number of rows grows for a million or so a month. 0 (for open_rasterio); Time bounds variables are now also decoded according to CF conventions (). The key here is to get multiple images and merge them in a way that the best pixels (i. Note: As of August 2018, this notebook requires modification in order to run successfully. Package Index: M-R. You can vote up the examples you like or vote down the ones you don't like. Python Data Lake Integration. When should you use GeoPandas? For exploratory data analysis, including in Jupyter notebooks. Keely Roth, PhD. I've been a Python programmer since 2001 and a GIS analyst and programmer since 1999, with a séjour in the digital classics from 2006 to 2013. Fractional Cover: Trend and Variability Analysis¶. transform, fill=0, all_touched=True, dtype=rasterio. I will discuss the motivation for writing Fiona and Rasterio and explain how. If you find this content useful, please consider supporting the work by buying the book!. It will show you how to add the necessary files and structure to create the package, how to build the package, and how to upload it to the Python Package Index. However, it’s a common practice to do a preliminary analysis on the available data and, if needed, optimize it since configuring big datasets without proper pre-processing, may result in low performance when accessing them. Hi there guys!!! Let's suppose we want to determine the extent of a raster file and we want to use GDAL and Python. 6 were built and are installed >> with python 2. It turns out the gdal_polygonize utility just wraps a call to GDALFPolygonize so writing your own hacky polygonize Python script is pretty easy. 0 - a Python package on PyPI - Libraries. py is a Python script, and will only work if GDAL was built with Python support. All gists Back to GitHub. Development also requires (see requirements-dev. GeoPandas 0. Rasterio is a highly useful module for raster processing which you can use for reading and writing several different raster formats in Python. cmd here is how to make conda-forge the default repository, so you don’t need to always specify ‘-c conda-forge’ at the end of each conda install:. Contents: 1. apply(d, 2, table) Will produce a frequency table for every variable in the dataset d. You often create outputs in Python that you want to use in another tool like QGIS or ArcGIS. Some advanced topics are glossed over to be covered in more detail elsewhere in Rasterio's documentation. All files must have the same number of bands, data type, and coordinate reference system. On the Spatial Reference Properties dialog box, do either of the following:. Plotly's Python library is free and open source! Get started by downloading the client and reading the primer. a shapefile) column : str column name of column to burn into raster resolution : float cellsize at which. Rasterio reads and writes geospatial raster datasets. If I might recommend another tool called AWK it might take some time to get a script right but once right it is a matter of seconds to get your desired output over and over. All gists Back to GitHub. A masked array is the combination of a standard numpy. The real oldie and goody is merge(), which with "real" Con was removed at 10. Install GDAL using the method recommended for your operating system. 0-transform Committed by web-flow. by Christoph Gohlke, Laboratory for Fluorescence Dynamics, University of California, Irvine. Rasterize() * fix build issues when CXX is defined in the environment * gdal. Rasterio installation failing I am trying to update my rasterio version from 0. In this session, we will extend the skills developed in the previous one about non-spatial data, and combine them. rasterize( [(x. Python tools for the BigEarthNet Sentinel-2 Benchmark Archive. You often create outputs in Python that you want to use in another tool like QGIS or ArcGIS. New Python packages. I used to use ArcGIS to merge rasters. I am trying to merge two address columns into one and separate the resulting string with '--'. @@ -76,7 +76,7 @@ The following commands are adapted from Rasterio's Travis-CI configuration. Rasterio's Python dependencies are listed in its requirements. Export Python scripts¶ While it has been possible for a while to export plots to e. Linux +++++ Rasterio distributions are available from UbuntuGIS and Anaconda's conda-forge. If you don't know what I'm talking about:. Rasterio is the main package we will use today. mapchete_serve. The first argument of this function is a. Thanks for posting such an excellent article. Before reading this post I didn’t have clear idea about clipping a raster. info Print information about a data file. It is available free of charge and free of restriction. Use a binary distributions that directly or indirectly provide GDAL if possible. I use python 3. select a subset of you image. More information on the options of gdal_merge. rio merge-rgba is a CLI with nearly identical arguments to rio merge. 0 (for open_rasterio); Time bounds variables are now also decoded according to CF conventions (). Official binary packages for Linux and Mac OS X are available on PyPI. Binary Distributions. GDAL performance: raster classification using NumPy I wrote some time ago two posts about raster classification and how to colorize a raster using GDAL. When should you use GeoPandas? For exploratory data analysis, including in Jupyter notebooks. ARPACK software is capable of solving large scale symmetric, nonsymmetric, and generalized eigenproblems from significant application areas. rasterioとrio-colorプラグインを使いたいです。 私はrasterioとリオ・色をインストールするためのピップを使用して、私は「リオ」を実行する場合、その後、私はこれを参照してください。. Jupiter python notebook was used as the processing environment to enable GDAL and rasterio libraries that allow access to geospatial data. However, in order to create an RGB version of the older images, I need to combine the three bands (4,3,2 - R,G,B) into 1 file. Currently I have to create a lot of tiles (defined by a shapely multipolygon) from a large number of rasters. Fiona and Rasterio are Python interfaces to OGR and GDAL. rasterize( [(x. Commit Message Merge pull request #193 from. ALT Linux was founded in 2001 by a merge of two large Russian free software projects. NIM011645 - Creating a replica in ArcMap using an ArcMap service will cause a crash if you use the advanced panels of the wizard. 6, laspy, rasterio and cscikit-learn, and point clouds were visualized using LiDAR360 version 3. no cloud or cloud shadow) are selected for the target mosaic. Breaking changes¶. The graph can be exported and analyzed using tools like Gephi. tif files into a multiple band stack using Rasterio and/or GDAL? I am looking for a way to avoid using a subprocess command like gdal_merge. All files must have the same number of bands, data type, and coordinate reference system. The following are code examples for showing how to use rasterio. Keely Roth, PhD. So we refer to the project and its packages as pytorch, but inside python we use it as torch. Oregon State University. Hello everyone, Has anybody worked on Open Source Apache Hadoop based Data Lake integrated with external Python 3. What is interesting is to see timing comparisons to using the itertools recipe unique_justseen (which I would recommend you use in production if you want to get duplicate free values in vanilla Python): from itertools import groupby from operator import itemgetter def unique_justseen(iterable, key=None): "List unique elements, preserving order. They are extracted from open source Python projects. For highly compact and readable code. Rasterize() * fix build issues when CXX is defined in the environment * gdal. Breaking changes¶. GDAL performance: raster classification using NumPy I wrote some time ago two posts about raster classification and how to colorize a raster using GDAL. Skip to content. I am trying to merge two address columns into one and separate the resulting string with '--'. --help Show this message and exit. 使用RasterIO快速显示图像 2012-05-29 19:47 本站整理 浏览(18) 这篇算是RasterIO的一个演示程序吧,源代码可以去资源中心去下载。. PNG, PDF, or EPS files from different image viewers it is now possible to export a Python script that can be used to reproduce the plot for some of the core viewers (including the 2D scatter and image viewers and the histogram viewer). Conda-forge is a fiscally sponsored project of NumFOCUS, a nonprofit dedicated to supporting the open source scientific computing community. This is a list of all source packages that have at least one lintian tag. Rasterio 1. Report 19 Downloads 402 Views. insp Open a data file and start an interpreter. Mosaic, being a core raster tool, is not integrated in arcpy map algebra, which is a pity. ArcGIS Generalization toolset has the nibble and expand tools to fill in NoData holes. Merge raster in GIS Software can be tricky. NIM011645 - Creating a replica in ArcMap using an ArcMap service will cause a crash if you use the advanced panels of the wizard. GitHub Gist: instantly share code, notes, and snippets. Mapping Tools¶ geopandas provides a high-level interface to the matplotlib library for making maps. I want to know how many users have joined in the month of October?. 1 (looper) audio/lv2 Added version 1. If you are trying to transition from a conventional, plan-based approach to project management, you may find previously successful teams do not quite have the right balance of experiences. In Python, we load the image and its attached geographic metadata with the rasterio module (see Jupyter notebook). 执行完上述命令后,会在python的site-packages目录看到多了gdal和ogr的文件以及一个osgeo的文件夹。我本机的目录是C:\Python26\Lib\site-packages。. Watch Queue Queue. If you select a variable from the variable list, it will be automatically added to the expression at the current cursor location. The Project Raster tool transforms x-, y-, and z-values of geometry coordinates. Mapchete simply chops your data into tiles using tile pyramid definitions from WMTS and simply applies your Python code to these tiles. If detected, it starts recording) audio/llcon Added version 3. And it handles tile pyramids for both the well-known Spherical Mercator and the WGS84 grids. -- Wes In anticipation of integrating NumPy's shiny new datetime64 dtype into pandas, I set about writing some faster alignment and merging functions for ordered time series data indexed …. cmd here is how to make conda-forge the default repository, so you don't need to always specify '-c conda-forge' at the end of each conda install:. I basically installing the python-numpy gdal-bin libgdal-dev on top. Python tools for the BigEarthNet Sentinel-2 Benchmark Archive. The first argument of this function is a. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 1 Linux, BSD, and Unix users, 2. in no way affected by my UNIX environment's insistence that python try to. Among these… Fiona and Rasterio: Data Access for Python Programmers and Future Python Programmers — Sean Gillies, Mapbox on Vimeo. GDAL is a low-level GIS toolkit that Rasterio depends on. Mapping Tools¶ geopandas provides a high-level interface to the matplotlib library for making maps. And since I have a default python version, 2. 2, and the Mitscherlich model and associated parameters were analyzed in MATLAB version R2018a ( The MathWorks Inc. Advanced Rasterio features notebook. GitHub Gist: instantly share code, notes, and snippets. rasterize( [(x. GeoPandas extends the datatypes used by pandas to allow spatial operations on geometric types. -python and GIS ( Spatial Data analysis, Data management ) -geo datascience Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. While it respects the COG specifications, this plugin also enforce several features:. Denne pakke indeholder Python 2-versionen af. imod-python imod; rasterio. In Python, we load the image and its attached geographic metadata with the rasterio module (see Jupyter notebook). 8 join operator override. A rio merge alternative optimized for large RGBA tifs. This video is unavailable. txt) Cython and other packages. The previous behavior was to decode them only if they had specific time attributes, now these attributes are copied automatically from the corresponding time coordinate. I use python 3. Rasterio læser og skriver geospatiale raster-datasæt. Export Python scripts¶ While it has been possible for a while to export plots to e. In [1]: import rasterio In [2]: from rasterio. Testing this in python console. 1; install geonotebook mkvirtualenv -a. While the new Mosaic Datasets are great, what if you only have 9. x it doesn’t matter which CUDA version you have installed on your system, always try first to install the latest pytorch - it has all the required libraries built into the package. array_clipped_mosaic, out_transform = rasterio. The Merge Rasters function represents a grouped or merged collection of rasters. We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. Note: As of August 2018, this notebook requires modification in order to run successfully. rasterize( [(x. Conda-forge is a fiscally sponsored project of NumFOCUS, a nonprofit dedicated to supporting the open source scientific computing community. You can use the bounds parameter of rasterio. The text is released under the CC-BY-NC-ND license, and code is released under the MIT license. After creating a celltable, ``pandas. 7版,也在零零散散学习python语言,于是想在python中感受一下gdal,顺便回首一下以前gdal的编译的问题,以前编译GDAL一直不成功,因为我是在visualstu 博文 来自: NickWar的专栏. During the course of running various accessibility models, a python framework tebetebe was built around OSRM [Open Source Routing Machine] which simplifies the process of running different scenarios. lib support libraries and their helper files were not included in the 9. When the time comes to write the file I keep getting this error:. plot import show. "Mosaic Large Images to a Single Raster in ArcGIS" is a case study based on ArcGIS Desktop 9. OK, I Understand. With a bit of trial and error, we’ve found the most effective way to fill in NoData cells is using the Close Gaps tool. merge()`` can be used to join additional data on this ID. It turns out the gdal_polygonize utility just wraps a call to GDALFPolygonize so writing your own hacky polygonize Python script is pretty easy. txt) Cython and other packages. On the one hand, this is convenient, but sometimes, you need to perform this task as a intermediate step, and creating and deleting files is tedious and error-prone. 7安装上将我的rasterio版本从0. NASA Earthdata account. 7版,也在零零散散学习python语言,于是想在python中感受一下gdal,顺便回首一下以前gdal的编译的问题,以前编译GDAL一直不成功,因为我是在visualstu 博文 来自: NickWar的专栏. Clipping rasters can be trivial with a desktop GIS like QGIS or with command line tools like GDAL. In ArcCatalog or the Catalog window, right-click the raster whose coordinate system you want to define and click Properties. uint8, ) Rasterio features module has a rasterize function that allows you to convert a vector object to an image. /06-Oct-2019 08:50 - 0ad-0. Commit Message Trust in GDAL's reference counting (#1800) * Trust in GDAL's reference counting Towards resolving #1799 * Require GDAL 2 * Revert to local dataset handle * Run tests under gdb * Implement GDALDatasetH reference counting in stop() This keeps datasets used in a WarpedVRT from crashing GDAL and Python when they are closed before the VRT. 6 + rasterio; It works perfectly for all but one file - "The Narrows". @@ -76,7 +76,7 @@ The following commands are adapted from Rasterio's Travis-CI configuration. To install xarray with its recommended dependencies using the conda command line tool:. Package List¶. When I started with GIS and raster processing, I didn’t really pay much attention to the performance of the scripts I wrote and tools I used. The Merge Rasters function represents a grouped or merged collection of rasters. Rasterio is designed to make working with geospatial raster data more productive and more fun. Watch Queue Queue. Package List¶. Each tile is a polygon and the rasters are simply tiff files on my disk. And since I have a default python version, 2. Report 19 Downloads 402 Views. It is available free of charge and free of restriction. It should be different if you were trying to do a script that find s all the pdf with their location, split basename and dirname and put all in a tex container to be compiled to have your file. An additional option is just shelling out from those languages, accessing data using the Python API, then passing the result back to the other program/language. xarray itself is a pure Python package, but its dependencies are not. Hi there guys!!! Let's suppose we want to determine the extent of a raster file and we want to use GDAL and Python. geonotebook # Numpy must be fully installed before rasterio pip install -r The system will merge. Rasterio læser og skriver geospatiale raster-datasæt. PNG, PDF, or EPS files from different image viewers it is now possible to export a Python script that can be used to reproduce the plot for some of the core viewers (including the 2D scatter and image viewers and the histogram viewer). lib support libraries and their helper files were not included in the 9. I would like to use the python package rasterio and some combination of fiona or geopandas to load the shapefile. Python Data Lake Integration. In ArcCatalog or the Catalog window, right-click the raster whose coordinate system you want to define and click Properties. I have a lot of other parts written (gridding the points, etc) in a package I currently maintain here:. Rasterio command line interface. 0 through 3. Commit Message Merge pull request #193 from. Let’s export the canopy height model that you just created to your data folder. -- Wes In anticipation of integrating NumPy's shiny new datetime64 dtype into pandas, I set about writing some faster alignment and merging functions for ordered time series data indexed …. I used the GIS capabilites for raster data available in Python through rasterio, along with numpy for convenient processing of rasters as numeric arrays and matplotlib for visualizing them. You can find the Close Gaps tool in the Grid toolbox. ReadAsArray() method can be used to read raster data as numerical arrays, ready to use with the Python numerical array capabilities. Hi there guys!!! Let's suppose we want to determine the extent of a raster file and we want to use GDAL and Python. rasterizado = rasterio. You can merge them in ArcGIS in two ways: mosaic to new raster; Combining these tools: create raster catalog; raster catalog to new raster. cmd here is how to make conda-forge the default repository, so you don't need to always specify '-c conda-forge' at the end of each conda install:. Rasterio er designet til at lave arbejde med geospatiale rasterdata mere produktiv og mere sjov. 0: Jul 7 : New to Data Science. Even if you are a beginner, learning a little bit of Python and QGIS programming interface will allow you to be much more productive in your work. I used to use ArcGIS to merge rasters. Sacramento Women in Data Science. 1; install geonotebook mkvirtualenv -a. the result table contains a json column containing json documents made of the merge of json documents fields included in table B with column-values of table A. DataFrame and merge with the a GeoDataFrame and loops over the individual shapely geometries like rasterio. Fingerprint: A7830CCABA4AFF02E50213FE8F32B4422F52107F Uid: Adrian Knoth Allow: a2jmidid (A62D2CFBD50B9B5BF360D54B159EB5C4EFC8774C), ardour. Mapping Tools¶ geopandas provides a high-level interface to the matplotlib library for making maps. GeoPandas 0. NIM011645 - Creating a replica in ArcMap using an ArcMap service will cause a crash if you use the advanced panels of the wizard. exe and conemu startup scripts with pcmd. Instructions¶. Rasterio installation failing I am trying to update my rasterio version from 0. The real oldie and goody is merge(), which with "real" Con was removed at 10. However, in order to create an RGB version of the older images, I need to combine the three bands (4,3,2 - R,G,B) into 1 file. This video is unavailable. (Though the rough edges of the Mosaic tool have been smoothed a bit (haha). 2 ArcGIS SDKs for C++ and VC++. This framework is built with footbridges in mind but is generalized so it may be applied to other applications. The last step is option. In this session, we will extend the skills developed in the previous one about non-spatial data, and combine them. Rasterio is a highly useful module for raster processing which you can use for reading and writing several different raster formats in Python. It's not quite a simple as installing the newest version however, so let's make sure you get the right tools for the task at hand. The Merge Rasters function represents a grouped or merged collection of rasters. Linux +++++ Rasterio distributions are available from UbuntuGIS and Anaconda's conda-forge. If you select a variable from the variable list, it will be automatically added to the expression at the current cursor location. Hello everyone, Has anybody worked on Open Source Apache Hadoop based Data Lake integrated with external Python 3. -q, --quiet Decrease verbosity. I think the problem is with your start. masked = numpy. Defining or modifying a raster's coordinate system. In the process, we will discover that, although with some particularities, dealing with spatial data in Python largely resembles dealing with non-spatial data. chm) files are made available in the "Windows" section on the Python download page. In general, Python scripts have the extension. csv before datum. You can select specific records in the polygon dataset and it will only clip this boundary. Pycel is a small python library that can translate an Excel spreadsheet into executable python code which can be run independently of Excel. Binary Distributions. This function is a shortcut to masked_where, with condition = (x == value). 0 through 3. The technique used to change the spatial resolution. September 29, 2015: This post is so old, I suggest you install latest versions of everything and try the benchmarks out yourself. You can select specific records in the polygon dataset and it will only clip this boundary. I'm relatively new to Python scripting. Merge them into a single value as follows: If both values are nonzero and equal, output that value: (3,3) -&g Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. It's not quite a simple as installing the newest version however, so let's make sure you get the right tools for the task at hand. 5 years and so far i have complete Data Science in R and working. I have a lot of other parts written (gridding the points, etc) in a package I currently maintain here:. Thanks for posting such an excellent article. geometry, 1) for i, x in gtroads_osm. I think I need a program. To use the recursive power of the jsonb_merge_recurse function, better merge two json column each containing multi-leveled json documents. Tutorial 1: simple raster conversion with GDAL If you are going to merge rasters, trust me, GDAL is MUCH better. pyplot as plt from rasterio. The following are code examples for showing how to use rasterio. I've updated all libraries (rasterio, GDAL, libtiff) but that hasn't fixed it. NIM011645 - Creating a replica in ArcMap using an ArcMap service will cause a crash if you use the advanced panels of the wizard. $ sudo add-apt-repository ppa:ubuntugis/ppa $ sudo apt-get update $ sudo apt-get install python-numpy libgdal1h gdal-bin libgdal-dev $ sudo apt-get install python-numpy gdal-bin libgdal-dev $ pip install rasterio: Adapt them as necessary for your Linux. exe and conemu startup scripts with pcmd. merge() with your shapely polygon of a specific tile. Note! In this case Python in c:\Python27 is used including the gdal_merge. apply(d, 2, table) Will produce a frequency table for every variable in the dataset d. Commit Message Merge pull request #193 from. /10-Oct-2019 03:55 - 0ad-0. 8 join operator override. Watch Queue Queue. Keely Roth, PhD. In the Adding a GeoTiff section, a GeoTIFF file has been added to GeoServer as is. To use pytests tmp_path, instead of polluting the working directory. You can select specific records in the polygon dataset and it will only clip this boundary. Rasterio is designed to make working with geospatial raster data more productive and more fun. 7版,也在零零散散学习python语言,于是想在python中感受一下gdal,顺便回首一下以前gdal的编译的问题,以前编译GDAL一直不成功,因为我是在visualstu 博文 来自: NickWar的专栏. Testing this in python console. Install Rasterio on the command line with the command pip install rasterio. geometry, 1) for i, x in gtroads_osm. Image processing in Python. csv ( #6531 ) optimize IWriteBlock() to avoid reloading tile/strip from disk in multiband contig/pixel-interleave layouts when all blocks are dirty. com , recently posted about merging shapefiles using a batch process. Mapping Tools¶ geopandas provides a high-level interface to the matplotlib library for making maps. merge模块 Rasterio. Python Data Lake Integration. merge ซึ่งรูป. shape, transform=wpgt_r. Even if you are a beginner, learning a little bit of Python and QGIS programming interface will allow you to be much more productive in your work. apply(d, 2, table) Will produce a frequency table for every variable in the dataset d. Fischer 2017-01-13 german translation update Alessandro Pasotti 2017-01-12 [server] Fix wrong debug output name and added HTTP_AUTHORIZATION Alexander Bruy 2017-01-12 [processing] configurable URL for scripts and models repository This prevents errors when user tries to download scripts and there is no access to the Internet (e. How can we do that? Let's start importing GDAL: Then we need t0 open the raster file: To finish getting what we need, let's get our affine transform coefficients with the following: Where…. This video is unavailable. xarray itself is a pure Python package, but its dependencies are not. The last step is option. 6 + rasterio; It works perfectly for all but one file - "The Narrows". Hello everyone, Has anybody worked on Open Source Apache Hadoop based Data Lake integrated with external Python 3. masked_where. Updated on 12 October 2019 at 05:08 UTC. Actually, it is two libraries – GDAL for manipulating geospatial raster data and OGR for manipulating geospatial vector data – but we’ll refer to the entire package as the GDAL library for the purposes of this document. GDAL performance: raster classification using NumPy I wrote some time ago two posts about raster classification and how to colorize a raster using GDAL. If you haven’t before, notice that some of the gdal utilties are actually Python scripts. I am trying to merge two address columns into one and separate the resulting string with '--'. Director, Earth Analytics Education @CUBoulder @EarthLabcu #remoteSensing #opensource #openScience #GIS #rstats #python #education 💜 Mountain Ultra Trail 💜. Mapping shapes is as easy as using the plot() method on a GeoSeries or GeoDataFrame. これらをmergeすると、共通の同じ列名(key)で結合されます。 In [10]: pd. As a library, it presents a single raster abstract data model and single vector abstract data model to the calling application for all supported formats. The web site is a project at GitHub and served by Github Pages. xarray itself is a pure Python package, but its dependencies are not. Comparing Map Algebra Implementations for Python: Rasterio and ArcPy Mary Marek-Spartz Department of Resource Analysis, Saint Mary's University of Minnesota, Minneapolis, MN 55404 Keywords: Map Algebra, ArcPy, Rasterio, Python, Raster Processing, Geographic Information Systems (GIS), Free and Open Source Software (FOSS), Environmental. Hi Everybody, I have been studying data Science from last 1. It’s not quite a simple as installing the newest version however, so let’s make sure you get the right tools for the task at hand. The graph can be exported and analyzed using tools like Gephi. It is useful when you have multiple rasters that you want treated as a single item, for example, to calculate the same statistics for all, or to treat as one image when color balancing (thereby, not color balancing each image separately). 0: Jul 7 : New to Data Science. I made a script that takes two raw data files and merges them into one CSV file, but it takes a long time to complete. (Though the rough edges of the Mosaic tool have been smoothed a bit (haha).