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.

Filter by
Sorted by
Tagged with
4
votes
2answers
200 views

Issue with QGIS 2.10.1 Clip and Intersect Tools

Having an issue in QGIS 2.10 -- clip and intersect don't seem to be working correctly. I am trying to show zipcode by a legislative district in Florida. When I clip the zipcode shapefile by the ...
1
vote
0answers
45 views

Flat polygon feature to serve floors to time bins on Z axis of ArcScene?

How can I create square polygons with different z-values to create the horizontal panes shown in the image from ArcScene?
1
vote
1answer
306 views

How to find cumulative length at points on a line?

I am working on a Modelbuilder project to teach myself how to use it. I do not yet have much knowledge in Python. I am currently a little stuck on the project I am working on. I have a line made from ...
4
votes
1answer
78 views

Attribute data disappearing after converting points to line

I am currently working on a project strictly in Modelbuilder. I am trying to teach myself how to use it. I don't yet know how to use Python and am still in the early learning stage. My question has ...
1
vote
0answers
798 views

Multipart to Singlepart and Explode not working in ArcMap? [closed]

I am trying to separate multipart polygons, however in case of Multipart to Singlepart program seems to be working for around 15 minutes and then it crashes and when I try to Explode I get the error:"...
2
votes
1answer
866 views

How do you create a buffer for a specific feature in QGIS?

Fairly competent ArcGIS user here, very new to QGIS. What I am trying to do is create a one-mile buffer around the highlighted parcel in QGIS 2.14 (from a .shp). Seemed straightforward enough: ...
5
votes
1answer
327 views

Adding new nodes in the middle of each líne of a Polygon

I am currently working on a Street Lighting Network. I have two layers in PostGIS ( PostGIS 2.1.3 and PostgreSQL 9.3.5): Manholes (56.000 Polygon) Pipes (Linestring) The manholes are perfect ...
1
vote
0answers
36 views

QGIS x ArcGIS - Geoprocessing Vectors in Geographic Coordinate Systems [closed]

Is there a possibility of in future versions of QGIS, the software be able to geoprocess vectors (clip, buffer, intersection, etc.) in Geographic Coordinate System, and not only in UTM? In ArcGIS, ...
4
votes
1answer
405 views

Count points in polygons using QGIS modeler

it is the first time that I’m using the QGIS graphical modeler and I found some troubles (QGIS 2.14.1). I’m trying to count points that intersect with polygons in a vector grid, but filtering the ...
1
vote
3answers
361 views

ArcPy Script Tool takes 30min - Ideas to accelerate the (raster) process

I developed an arcpy script tool that takes as input multiple rasters, a criterion to select specific cells from the raster which are then intersected with a point shapefile. At the end a value is ...
1
vote
2answers
505 views

Translating ArcPy Commands to GDAL Equivalents? [closed]

I'm trying to figure out GDAL equivalencies to the following arcpy functions: arcpy.env.overwriteOutput() arcpy.MakeFeatureLayer_management() arcpy.SpatialJoin_analysis() arcpy.da.SearchCursor() ...
3
votes
3answers
1k views

How to simplify borders between polygons in shapely?

I have some fairly complex, and not completely accurate shapes stored as shapely Polygon objects. I'm trying to find the common borders, which should be as easy as finding the LineString returned from ...
2
votes
1answer
89 views

Import ArcToolbox Log History on ArcGis

I do not know what happened but I have lost all my ArcToolbox log history that was available trough "Results" menu. The strange thing is that I can access the log files that are saved on my ...
0
votes
1answer
131 views

Why do we georeference from the image to the shapefile (and not the other way around)? [closed]

Why do we georeference going FROM the image, TO the shapefile (and not the other way around)?
3
votes
3answers
488 views

Calculating length of polyline next to polygons using ArcGIS for Desktop?

I searched a long time for the solution of my problem occurring during my diploma thesis. Maybe I am missing the right keywords for the correct search, but I need your help. I am using ArcMap 10.3. I ...
0
votes
1answer
256 views

How can I convert a DataTable to a GeoDatabaseTable

I have a DataTable full of "stops" and I want to convert it into a table that can be GeoCoded. However, I am getting an error when I try to execute it. The Message: Error HRESULT E_FAIL has been ...
3
votes
2answers
549 views

“Batch process” in qgis or simple program for resave multiple vector files into files with different CRS

Right now i,m using QGIS 2.10.1 Pisa, and i wonder if in QGIS there is any feature or plugin to resave multiple vector files that using CRS "A" into vector files using CRS "B" in 1 execution step (...
1
vote
0answers
184 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 ...
3
votes
3answers
162 views

QGIS Spatial join using subset of features?

I have a road network shapefile, as well as a postgis layer of different areas in a city. The areas file contains one big polygon containing everything (the service area), and then a series of ...
0
votes
1answer
70 views

Add arrows next to many polygons

I have many polygons that present wind directional movement. I use Arc-Map 10.3.1. How can I add arrows next to each polygon, to show the wind direction in any polygon?
1
vote
1answer
114 views

Interact with Selection and Entire Dataset using arcpy

ArcToolbox geoprocessing tools (and therefore arcpy) tend to run either on an entire dataset (if there is no selection) or on a selection set (if it exists). How can I set up an arcpy script that ...
1
vote
0answers
502 views

Correcting for offset

I have a shapefile with real-time kinematic (RTK) measurements as a line feature, which more or less corresponds with visible features in a raster layer (shaped as lines). These measurements however ...
7
votes
2answers
408 views

How to use real GIS tools to make skewed area maps for infographics

I'm a junior GIS tech, trying to make a map as part of an infographic. I wanted to do one where the size of polygons varied with a particular numeric attribute. Something like this one, where each ...
1
vote
2answers
90 views

How can you identify the geoprocessing tool that was used to create a layer in ArcMap?

In my Table of Contents, I have a layer that is named "symmetrical differences" but I am not certain it was created using that tool.
1
vote
3answers
134 views

Seeking website to do geoprocessing online? [closed]

Is there a website in which I can do geoprocessing online? I know there are a lot of sites that allow the visualisation of your data online or some basic map-making, but I need something more... Kind ...
1
vote
0answers
28 views

Using ArcMap's report system on large scale? [closed]

I'm trying to set up a reporting system based off two layers - point and polygon feature classes. The system would run this report on each polygon that had a value in a specific field (polygons ...
4
votes
1answer
1k views

Running PostGIS ST_ClusterWithin on large dataset?

I am trying to use the new ST_ClusterWithin in PostGIS 2.2 to help me aggregate building polygons that are within 5 metres. The source data has > 13million polygons. I ran the following query on a ...
4
votes
1answer
218 views

Making output table of Python script tool be intermediate file to another model?

I have created a Python script tool using ArcPy. It has a File Geodatabase Table as output. I want to add the script to a new Model in ModelBuilder in ArcMap. The Table output should be an "...
1
vote
4answers
3k views

Geoprocessing Tools - I can't get Intersect/clip to work

I desperately need to intersect two layers, one of 32 large polygons (towns) the other of many smaller areas with those towns, so that I can classify and make calculations on the smaller areas sorted ...
0
votes
2answers
115 views

Finding output of geoprocessing operation in ArcGIS for Desktop?

I am merging some features using the Geoprocessing Merge tool in ArcGIS 10.1 for Desktop. The tool requires that the output is saved in a folder. Although this was done after the process ended ...
1
vote
1answer
1k views

How to get latitude and longitude data from the borders of a state in R

Here is my problem: I need to get longitude and latitude data from the borders of the Brazilian states. With this data I can plot a map of each Brazilian state and, of course, of the whole country. I ...
2
votes
1answer
210 views

How do you start a Toolbox tool from ArcObjects?

I want to put a couple of toolbox Tools onto an AddIn toolbar. I tried to reference the ProgIDs in the toolbar section of the Config.esriaddinx, but that didn't work (only saw blank spaces where the ...
1
vote
1answer
2k views

Script Error 'Invalid Pointer' in Spatial Analyst Tool [duplicate]

I have ArcGis 10.3 (previously 10.2 version) running on Windows 10 (previously Windows 8). My GIS licence is provide by my company where I have an intership, so I can't just uninstall/install back the ...
2
votes
1answer
167 views

Calculate data from a set of raster files

I need to make some calculations with data from raster files saved in my postgis database. I need, build a map, using the average from a set of these raster files, for example. Besides, I need to ...
2
votes
1answer
237 views

Are QGIS Intersect and Clip Tools Broken?

I was getting this problem with a complex map so I have created a simplified map with two layers. Accessible greenspace contains a couple of hundred small, mostly isolated, polygons with one (name) ...
1
vote
0answers
57 views

Geoprocessing Tools Create Empty Shapefiles in QGIS? [closed]

I seem to have great difficulty using the geoprocessing tools in QGIS. Sometimes they work fine, sometime no matter what I do I get a null result, even though I can see I should be getting a selection....
-1
votes
1answer
123 views

Support for Foreground and Background geoprocessing in ArcMap tools?

If not all ArcGIS tools support both foreground and background Geoprocessing, then how can I tell whether a tool will run in the foreground or run in the background?
1
vote
2answers
270 views

Seeking list of Geoprocessing tools that take advantage of 64 bits?

I am looking for a list of ArcPy tools that will actually utilize 64 bit structure. I know some of the tools will just run a 32 bit version inside a 64 bit program. I could have sworn I have seen ...
3
votes
1answer
886 views

How to handle two onclick events that not both are fired?

I make a web application with ArcGIS API for Javascript (version 3.15) to access a geoprocessing service. The service is executed on an onclick event by the user, because the clicked position is used ...
3
votes
0answers
45 views

How to intersect two polyline layers? [duplicate]

I have two line shapefiles that overlap 50% of the time. I want to generate a new single shapefile that includes attributes of both datasets AND no duplicate segments. A short segment from one layer ...
1
vote
1answer
56 views

Table Select does not work in Model Builder, when using parameter in SQL

I'm trying to create a model that uses values from a single table, in order to perform a different calculation for each raster in a file. Each raster is represented in the table by a row that contains ...
1
vote
4answers
74 views

Reformat Attributes In a Feature Class

I am using ArcGIS 10.3 for Desktop. I received a feature class with attributes, as illustrated in the first table below. I am seeking a geoprocessing tool or process that would help me reformat the ...
0
votes
1answer
226 views

Using Generate Near Table and keep the ID attributes

I try to use near table between two datasets to calculate the nearest distance. The original data is as the right one, and the near table generated is as the left one. The problem is the attribute of "...
2
votes
0answers
149 views

How to add Geo PDF header to a PDF rendered with mapnik?

I rendered a PDF with mapnik and I am now trying to add geospatial header information to the PDF. I tried the method add_geospatial_pdf_header() from mapnik.printing.PDFPrinter. I do get some Geo PDF ...
2
votes
2answers
2k views

Error while Geoprocessing with Geometry Objects

I'm trying to use the distanceTo() mehtod to return the distance between the centroid of a polygon and a line, but I keep getting this error: "AttributeError: 'Point' object has no attribute '...
0
votes
1answer
480 views

DBMS Table Not Found with SQLite and ArcGIS 10.3

I'm trying to set up a spatially enabled SQLite database with ArcGIS 10.3. I've gone through the following steps: Create a database using the sqlite3 utility: sqlite3 mydatabase.sqlite Load the ...
2
votes
2answers
515 views

Calculating area in polygons NOT covered by other polygons in ArcGIS Desktop?

I have two polygon shapefiles, one is county boundaries and the other is the National Flood Hazard Layer that shows areas in the floodplain. The flood layer is an extremely complex and challenging ...
0
votes
0answers
98 views

Problem with Viewshed analysis in ArcObjects

I want to execute the Visibility Analysis Tool using ArcObjects 10.3. I tested the tool in ArcMap and it works great with the test data I provided, hence it should work as well in ArcObjects code. The ...
0
votes
1answer
444 views

Reshaping automatic polygon edge based on reference layer using ArcGIS for Desktop?

i have two polygon layer, one for Region administrative"Reference layer", and the second is administrative border is governorates. Governorates border is not identical with Region border. So there is ...
5
votes
2answers
661 views

Extracting Overlapping Parts of Single Polygon Layer using QGIS?

I have a single polygon layer with over 200 buffers with a lot of overlapping areas. I want to use QGIS to create a new layer representing the overlap. I've seen several questions that are similar, ...