Questions tagged [geoprocessing]

Geoprocessing is a GIS operation used to manipulate GIS data. If you are performing geoprocessing using ArcGIS then the tag Geoprocessing-framework is specific to that software and should be used instead.

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Seeking alternative to ArcGIS Pro Split tool

Using ArcGIS Pro for references: I have a polygon feature converted from raster that covers a large area produced by a suitability analysis. There are a lot of little shapes (11,932 total) within the ...
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How to tell if a layer is Z-aware or M-aware

I am trying to detect if a layer is Z-aware or M-aware. If it is, I need to flag it to be reconfigured without Z/M-awareness. In the example below, I have already pulled down the layers and am ...
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"Make NetCDF Raster Layer" tool causes ArcGIS Pro to freeze

ArcGIS Pro is freezing up whenever I use the tool "Make NetCDF Raster Layer" It was working fine until I got to layer 20, any ideas? This has happened on both my personal laptop and a high ...
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How to Export/Print Version differences between child version and default version from ArcGIS Pro to an Excel spreadsheet or .csv file

How to Export/Print Version differences between child version and default version from ArcGIS pro to an Excel spreadsheet? When I have a version other than the default, and click on version changes in ...
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Spatial Join - Polygon vs Point - Is it possible matching output fields?

I have two feature classes in a geodatabase, one is a polygon or regular cells of a grid (Grid), the other one is a point feature (PointHabitat). A polygon or a cell can intersect one or more point. ...
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Clip a shapefile into rectangle shape

I have a global Vector file. I want to clip it to country's level. But the file is very large and it is taking too much time. I want to first clip it to a rectangle as marked below, then use that ...
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Shortest path based on priority

I'm using the geoprocessing "Shortest path (from layer to point)" of QGIS and i'd like to get the shortest path not in the usually way, but based on priority of the routes used. For example, ...
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How to make a projection of a linear layer on an another layer

I'd like to know how to make a projection of a complex linear layer on an another layer, overlapping their geometries perfectly and considering the extremities of lyr_1; using geoprocessing of QGIS. ...
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How to transform Kelvin to Celsius in GEE

I'm struggling to transform Kelvin to Celsius in Google Earth Engine. I'm working with ERA5 2 meter air monthly average and the output of the code below is in Kelvin. How can I transform it into ...
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Polygonize large raster to create mask gives memory error

I have a very large land cover/land use raster for South America with dimensions (y: 162565, x: 188387) at the Landsat 30m resolution. I want to use it to mask another raster for the same area at 270m ...
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What is the difference between pasting into a layer or a template?

ArcGIS Pro When using paste special, what is the difference between pasting into a Template and pasting into a Layer? I've read the help page but it hasn't clarified what the functional differences ...
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ArcGIS Pro Geoprocessing tools do not create output due to file locking issues

When geoprocessing tools are run in ArcGIS Pro, sometimes I receive errors related to file access issues. Typically it is errors 229, 210 or 160385. It says it cannot open the file geodatabase, ...
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Combining Polygons from matching features into a single MultiPolygon feature with QGIS

I have a GeoJSON file from an upstream provider that uses multiple feature "rows" to represent disjoint boundaries of what I need to treat as a single feature. For example in the dataset ...
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Batch-replace geometries from one FC to another (via related IDs)

ArcGIS Desktop & Enterprise 10.7.1 — Oracle 18c — SDE.ST_GEOMETRY I have a polyline FC called FC-A. And I have an additional polyline FC called FC-B. I want to update the shapes in FC-A with the ...
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Connecting address points to nearest part of a road network that has matching street name

In ArcGIS Pro (or ArcMap), using built-in Esri geoprocessing tools, how can I create connection lines between address points and the nearest part of a road segment with a matching street name (e.g. '...
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Default results management time period for ArcMap

I tend to forget that the default time period for geoprocessing results displayed in ArcMap is a meager 2 weeks, and I go back to an .mxd that I used years ago to try to refresh my memory on how I did ...
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ArcGIS Pro Append Issue (field contains both text and numeric values) [duplicate]

I've got a workflow that appends values from a CSV file into a geodatabase table. Using field mapping, I've got the CSV column mapped to a text field. The issue I have is that the CSV column ...
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Bypassing Optional Layers for Series of Differences in Graphical Model

I am working on a graphical model which uses succeeding geoprocessing differences but some layers to subtract are optional, however each step subtracts more depending on the layer. Example iterative ...
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Output singlepart features by default for tools and algorithms in QGIS

In QGIS, many algorithms and tools return multipart geometries. For further processing, a conversion Multipart to singleparts is necessary. This is a bit cumbersome. To make just one example: when ...
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Geoprocessing buffer "." files are not supported for this algorithm

I am trying to buffer a layer which worked earlier. I recieve, The "." files are not supported for this algorithm Other tools give me the same error along with Fix Geometries, Reproject ...
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Performance in reading and writing rasters using Python and GDAL

I've been thinking about how to improve my plugin's performance, which involves a lot of operations in chain (always getting the result of the previous algorithm). One of the problems I noticed is ...
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3 votes
2 answers
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Extracting raster values to points using ArcMap

I am working on a project to determine the coastal vulnerability. I have different variables like elevation, LULC, bathymetry, etc. of the entire study area. I am stuck in the middle of my analysis. ...
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Compare two linear layers with geoprocessing tools

I'd like to know how can i have in output two layers, composed by one of the two layers in input, comparing the geometry and attributes of the 2 input layers (test_1 and test_2) using geoprocessing ...
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"Difference failed" error when using difference tool with point layers as input and overlay in QGIS

Is it possible in QGIS 3.16 to use the geoprocessing tool "Difference" with point layers as input and overlay? The documentation seems to indicate that it is. However, when I do a test with ...
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Using spatial buffer to "declutter" and retain point data in ArcMap

I have a shapefile of point data (lat/lon points) that I need to "declutter" a bit, based on a 15 km spatial buffer around each point. The image below shows what the data points look like, ...
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Geometry Object geoprecessing fails

Theoretically, ArcPy geometry objects can be used as inputs and / or outputs in geoprocessing tools, just pass arcpy.Geometry() as an argument for outputs. However, I have come across several tools (...
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ArcPy using SearchCursor with Geoprocessing to perform operations on each row

I have a shapefile, that has lots of individual rows. My goal is simple, to export each row as a raster. I am trying to use SearchCursor, to select each row and perform a feature to raster conversion. ...
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How to create a straight line from start and end vertices of a line using Qgis?

I want to create a straight line from two vertices of a line which are not straight, but I should be getting a straight line joining the start and end vertices of this curve line. I want to attain ...
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4 votes
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Viewing entire Python script of process ( input settings and environment settings) in ArcMap

When you "copy as python snippet" from the results of a process, the script contains all of the input settings but does not contain the environment settings. Why is this? Is it possible to ...
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Removing the underlying polygons to only get the top polygon

I'm trying to do a suitability analysis in ArcGIS Pro but I've seem to run into a problem with overlaying polygons that shouldn't be overlaying. I put all the data into a weighted sum and then divided ...
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Orfeo Toolbox output rasters are 300x larger than inputs of the same size

I am trying to use Orfeo Toolbox CLI to do some processing, e.g. Smoothing: otbcli_Smoothing -in path/to/mosaic.tif -out output/smoothing.tif uint8 -type mean For now, the input, mosaic.tif, is just ...
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Converting a slightly warped polygon lattice with irregular edges to a raster

I have a problem which has been frustrating me for a while. I have a lattice of polygons which is slightly warped due to unknown CRS transformations & distortions, enough so that the side lengths ...
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Process large ROI in GEE

I am calculating the VCI for Europe, but the ROI is too large for a single run in GEE. How can I divide it and process it in chunks so that when downloaded they fit into a single image/composite? var ...
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Merging features with the same values within feature class

I have a feature class of land parcels that contain "ownername" and "land_use_code" fields. Some of these features have the same values despite being two different parcels in ...
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OGC API Processes returns error 500 or 400

I am testing the following OGC API endpoint on demo pygeoapi server https://demo.pygeoapi.io/master/processes/hello-world/jobs following the documentation page 32 I post the following JSON body: { ...
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Creating global Geoprocessor object for ArcObjects application?

I have an application that does many operations including some Geoprocessor tasks. Should I create a single Geoprocessor() object for the lifetime of the application or should I create a new one each ...
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5 votes
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GEOS geoprocessing error when using difference tool in QGIS

I am using QGIS version 3.14.0. I have about 20 polygon .shp-files with overlaps between files. All are in the same projection. I've been using the difference tool to remove the overlaps and then ...
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Point to line tool to link all pairs of points in ArcGIS Pro

I have a series of points which I want to connect together as a web, with lines between all possible pairs of points. I'm sure I've done this before using the points to line geoprocessing tool, but I'...
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Sync changes from view to feature class (using a GP tool; without fully replacing the data)

I have an ST_GEOMETRY view with 50,000 rows (in an Oracle 18c/10.7.1 geodatabase). The view references a WORKORDER table in an external system (via a dblink/Oracle 12c). Problem: The view is too slow ...
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6 votes
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How to choose limited number of points to represent a point grid

I need to choose a few points to represent the grid below, e.g: 8 points in the grid below. This point need to be geographic distributed This points needs to be geographic distributed. Lets see a bad ...
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1 vote
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Merging/unifying polygons from same layer when boundaries are touching using ArcGIS Desktop

I have a big layer full of polygons. The ones that are separated, are individualized. However, I want to join the ones that have their boundaries touching each other (look at the image). For example, ...
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Making a pivot table in ArcGIS using Standard license

Having issued with using the pivot table tool in ArcGIS Pro due to the license level, I want to know if any geographer here knows how to make the pivot table of pivot table-like output using a set of ...
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2 votes
2 answers
478 views

How to average multiple GeoTIFF images?

To be short: how can I average two (or more) GeoTIFF images? Explaining: I'm working with coastal water turbidity, using NASA Worldview images. I can easily visualize them in Jupyter Lab (Windows 10) ...
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What is the difference between "Random Forest" and "Forest-based Classification and Regression" in ArcGIS Pro?

ArcGIS Pro (2.6.0) has tools to train Random Forest (named Random Trees in ArcGIS) and Support Vector Machine. Afterwards, the tool named "Classify Raster" contains the algorithms to apply ...
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Connecting individual road segments that participate in a dead end

I am trying to get a road feature class ready to do some analysis, regarding dead end roads. I have a road dataset cleaned up with continuous single segments, split at each road intersection. I have ...
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3 votes
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Intersecting large shapefiles onto grid in QGIS

I have 21 separate shapefiles containing data for Ireland as various polygons on QGIS 3.10. I'm trying to intersect each shapefile onto a 250m² grid of Ireland so that I'll have 21 separate shapefiles ...
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ArcMap location queries

I'm new to ArcGIS and am trying to determine sites that meet a series of geographic criteria including: within various distances of certain features, as well as within a distance of one layer but not ...
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Creating geopackage layers as output with QGIS batch processing autofill option

Is it possible to use the Calculate by Expression tool to output geopackage layers. For example, with the batch option for the polygon to line function. With the following expressions I can create ...
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2 votes
1 answer
264 views

Batch processing GPX tracks

I have a manual QGIS system that starts when I load a GPX file into QGIS and perform a number of actions on it. It all works perfectly. I want to automate this process using the QGIS Graphical Modeler,...
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QGIS: Dissolving stacked polygons into non-overlapping "donut" features

I am trying to get my head around what I think is a fairly straight forward geoprocessing problem: I have created a polygon contour layer. However the polygon features are stacked on top of each other ...
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