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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19 views

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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2answers
28 views

Finding Overlapping/Close Points of Same Layer in ArcGIS Pro

I have a dataset of point features with photo attachments of street signs from volunteers through the Survey123 app. The app records their location which ultimately creates the point feature. Part of ...
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1answer
35 views

Sampling raster data and classifying the pixels

I'm completely new to python usage in GIS. I'm working with Sentinel images and want to sample the pixels of raster file only in the places which are represented by the geometry of the truth data ...
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1answer
58 views

Resolve Intersecting areas in shapefile

I combined two shapefiles and noticed that the polygons didn't overlay perfectly. How can I resolve these intersections to snap to their closest neighbours? This is a closer look at the intersections:...
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0answers
22 views

What is the best way to utilize the hardware of your computer to aid in geoprocessing?

I have a pretty nice computer and I am trying to find a way to utilize all of the resources at my disposal. I am running a 3990x 12 core AMD processor, a RTX 2080 Super graphics card and 32GBs of RAM ...
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1answer
81 views

Saving as/export results of GeoVisual Search (Descartes Labs)

I am working with satellite imagery processing. I'm using this service to search for some objects in the US: https://search.descarteslabs.com Can I export about 1k results, for example, to KML or ...
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1answer
24 views

Spatial join (points in polygon) but also including the “observation count” of each point in the join_count field

I have point layers of bird observations, and I want to symbolize certain areas by the number of bird observations in each polygon. Each point in the point layer has a "observation count" field ...
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1answer
54 views

Add map parts to existing map

I have 4 scanned maps in geotiff format and need to create a single map using OkMap with the 4 geotiff files. How can I add adicional map files to a single map using OkMap?
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1answer
38 views

NDVI calculation

I am a newbie in PyQGIS. I start to write my own simple code to automatically calculate NDVI from Landsat 5. Here is my code: from PyQt5.QtGui import * from qgis.analysis import * land_3 = 'D:\...
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0answers
24 views

Outputting temporary feature layer from geoprocessing script tool to current map (ArcGIS Pro)

This is my first time attempting to create a script tool. I have gotten my script to work when running it in the Python window in ArcGIS Pro, however running from the script tool is slightly different....
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15 views

Adjusting Points with Offset using ArcGIS Pro

I have a collection of GPS points that were collected along a road over the course of a few years. Some years are right where they are suppose to be, but others are offset by 500 feet. Another year's ...
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1answer
76 views

Seperate each row of points from shapefile with latitude and longitude information

I have a shapefile which has point geometry points with latitude and longitude values.The image when opened in QGIS looks similar to the below picture and I want to know whether I can separate each ...
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35 views

QGIS: How to speed up raster processing?

Is there any way to speed up raster processing in QGIS? I have seen discussion about speeding up rendering and querying, but not processing. I am using SAGA tools to calculate morphometrics and the ...
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1answer
57 views

Donut shape related to concentric circles in QGIS

I would like to get an area between 10 miles and 20 miles from the center of counties. To do that, I wrote the code and got the following image. But, as you can see, there are some empty points, as ...
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0answers
31 views

How is Topographic Position Index calculated?

My understanding of how topographic position index is calculated is: TPI = cell value - (mean of cell values within defined neighborhood) But, I see that Weiss' original poster (http://www.jennessent....
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2answers
89 views

Exporting geoprocessing results history from MXD?

I have an MXD with the results saved to it. I want to look at the parameters that were set for some of the tools externally, so I want to export the results. Can this be done?
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26 views

Is there any way to see a computational complexity of a tool?

For example, if I run a tool, ModelBuilder or ArcPy script and I select it's input data and parameters. Is there any way to see how complex the algorithm is in some kind of units? After the tool has ...
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1answer
35 views

“Failed to load system tools” error from ArcGIS Pro Geoprocessing

I updated my ArcGIS Pro to the latest version, and after opening a project and clicking on the Geoprocessing tab I get an error that starts Failed to load system tools which is then followed by a ...
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1answer
18 views

Does MakeTableView work with field_info in ArcObjects?

gp.Execute(new MakeTableView() { in_table = $@"Database Connections\os@gisuat.sde\TESTGIS.SOME_POLY", out_view = "SOME_POLY", ...
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33 views

Calculate and map gains and losses of mangrove extent over time (vector data) QGIS

I have a shapefile containing polygons (area of mangrove) per year for 35 years (=35 shapefiles). I would like to map changes of mangrove extent over time. I want to map gains and losses (colour ...
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0answers
12 views

ArcGIS Pro publishing broken geoprocessing services

Recently I started moving my workflow from ArcMap to ArcGIS Pro but I am having some trouble publishing geoprocessing services with constant values as parameters. I executed my tool normally, using ...
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0answers
26 views

Join the fields (column) into headers after geoprocessing

I am new on QGIS, I will try to be as specific as possible, but it seems quite hard to explain... I am working with a first polygon vector: species' territories [In the attributes table: 50 lines, for ...
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0answers
8 views

Using a hillshade function as processing template while adding rasters to a mosaic in ArcPro 2.5.1 does not work

I have a workflow in Arc desktop 10.6 where I add bathymetry raster source mosaics of different cell sizes to a master mosaic as type table and apply a hillshade function at the same time. (This is ...
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0answers
36 views

QGIS Python: Creating a split seperate Split Vector Layer by Shapefile:SyntaxError: invalid syntax

I have been following this solution of my Question to make the Vector Split algorithm output in the shapefiles: Splitting vector layer into shapefiles (not geopackage) using QGIS?. The Thing is I want ...
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7answers
21k views

Open Source Address Correction / Parser with Fuzzy Matching

Here is a a little bit of a detailed question related to address parsing/geocoding which I feel should be interesting to many users. So, essentially I am curious to know if anyone has had any ...
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5answers
3k views

Address Standardizer Options

Ok, so with ArcGIS 10, ESRI has depricated 'Address Standardizing' in the new locators, I know you can still use the 9.3.1 locators to do this; but I heavily suspect that after the 10.1 version we ...
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4answers
27k views

Automated/geoprocesing tool to slice, clip, or cut polygons using polylines using ArcGIS Desktop? [duplicate]

Looking for a simpler method here. I am trying to split up / cut / slice existing polygons by using existing poly-lines. An example would be splitting a water body or land parcel at the point where a ...
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1answer
27 views

Divide batch of polygons inside shapefile into aligned grid using ArcGIS 10.4 [duplicate]

I have a polygon shapefile that contain a batch of rectangular polygons with almost equal dimensions. These polygons are not touching each other, they are on some distance. Now I want to split or ...
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2answers
63 views

Generate parcel-adjacency polygons?

I have a parcel layer (blue polygons) and a road centerline layer (black lines). I want to generate polygons that represent the portion of the road right-of-way that is adjacent to each parcel (...
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1answer
12 views

Working out the area of certain class types within a polygon

I am trying to use a DEM to determine land management units based on combinations of slope and aspect. As per the task I have created three individual boolean 'Class' rasters which have specific ...
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1answer
19 views

Capacitated Vehicle Routing Problem with Categories

My problem resembles the capacitated vehicle routing problem but there is an aspect to it to which I've been unable to find a solution in tools like ESRI's Network Analyst. The problem is to find the ...
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2answers
1k views

Snapping point to point based on attribute?

I'm using ArcMap. I have two identical point feature classes, one snapped to a line and the other not. Each point represents a telecommunication pole and the line represents fiber optic cable. I ...
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1answer
55 views

Importing map found on the Internet to QGIS [closed]

I am new to QGIS and I have learned some of the basics. Now, I have found a Soil Map of Germany I want to work with on the internet. My tasks now are as follows. To reduce the size of the map with ...
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2answers
804 views

Deleting shapefile element using Fiona?

I have downloaded a shapefile (.shp) that I'd like to read in using fiona.open and delete records. The reason I'd like to delete records is that some records have "None" geometries. So I want to ...
6
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2answers
118 views

Polygons from two different shapefiles that share common border in QGIS?

I have two shapefiles, which are village administrative units in this case. Given that these two shapefiles share a common boundary/border is it possible to get the border units (villages) on both ...
2
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2answers
48 views

Cannot reuse output feature class in a custom geoprocess using ArcObjects

I'm developing an arcobjects 10.4.1 custom GeoProcess (fusion shift) which has to be able to run within a model builder. The GeoProcess seems to run smoothly, but the problem is it needs to be ...
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0answers
23 views

When to choose between a raster or vector format?

I'm trying to decide how to best serve data layers on a map. The data will be preprocessed on the server. The workflow I'm currently trying to implement goes as follows: Acquire satellite imagery (eg....
2
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0answers
44 views

Creating building's shadow over buildings in QGIS

I want to create a map with the shadows projected from the building. There are a few methods to create this, but all of them are not so accurate. The Translate Method has the problem that is not ...
1
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1answer
230 views

Terrain Profile starts a selected polyline-based graph in different directions

I´m trying to create some profile graphs with Terrain Profile in QGIS 2.10 Pisa, using LCP´s between a site and seven lithic deposits as polylines. When I select some of these lines, the graph starts ...
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0answers
29 views

QGIS 3.4 Select by Location Returns Geometry Error - Processing Settings Ignored

I am using QGIS 3.4 on Ubuntu 18.04. I have a county wide city boundary polygon layer and a county wide building footprint polygon layer. I would like to select all the buildings that are within a ...
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2answers
45 views

At what stage is it best to project your data? Or does it even matter?

I am doing a series of geoprocessing steps in ArcGIS with a couple different datasets, for a global analysis of habitat loss and impacts on biodiversity. I have raster forest cover tiles and polygon ...
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3answers
3k views

Importing ArcPy taking many seconds and code is really slow for GeoProcessing Tools 64-bit (ArcGIS 10.1 SP1)

I've installed ArcGIS10.1 SP1 and whenever I import arcpy (on Pywin console or Eclipse PyDev) it takes aprox. 15-20seconds. Is this normal? I don't think so... I had Python 2.7.3 64-bit previously ...
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1answer
19 views

Geoprocessor cannot find input data, but only for some users

I am developing a stand alone application that at some point needs to run Dissolve on a subset of data in a feature class. This code works for me without issue, regardless of workstation. When another ...
2
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2answers
1k views

Zoom to selected feature, without using 'current' in ArcPy?

I am wondering if it is possible to build a zoom to geoprocessing service without using 'current' for the MXD variable in Python? Using 'current' my tool works in ArcMap, but not in my geoprocessing ...
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1answer
28 views

Using Union tool without optional overlay layer

In QGIS 3.10.3, I'm trying to figure out how to use the Union tool without the optional overlay layer. When I go to "Vector > Geoprocessing Tools > Union..." and bring up the tool, the ...
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0answers
20 views

Create a polygon from a line layer [duplicate]

I am using QGIS 2.14. I am trying to create a polygon from a line layer(roads) so that I can clip layers within that area, but my output layer will not clip any other layer only the roads it lies ...
3
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1answer
49 views

Remove polygon overlap based on id in Python

I have a Shapefile consists of multiple polygons, where I want to erase the overlap based on the id. An example to visualize the problem: import geopandas as gpd from shapely.geometry import ...
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1answer
43 views

Batch Create Circle Sections based on center point, radius and azimuth range

I have over 1000 points with radius and min/max azimuth. I need to create a circle section based on these three columns for each point (buffer each point by radius but only keep the section between ...
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0answers
56 views

When clipping an input vector layer with many polygons, polygons which overlap the boundary of the clip layer are not included in clipped layer

This seems like a simple issue, but searching all the questions and answers here I cannot find the solution. I have a vector file made up of many polygons (it is a layer of vegetation types). I want ...
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2answers
28 views

Calculating shape area for polygons in different files using Python

I need to calculate the shape area (and possible the perimiter) of polygons for over 300 files. I tried to use a Python code but I am not very familiar with Python so when it returns an error I do not ...

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