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I'm a new to GIS and I need some help.At the moment, I'm trying to develop an optimal path across an area by using GRASS 7 features. It is very similar to the task given here. The problem is that I don't have any data with elevation points and cost surface for this area. Tell me please, how can...

How do I get the pop-up help window that's part of the auto-complete to show more definitions of the tool being used? For example in the attached image the definitions of "Buffer_analysis" inputs stop at "line_side". I'd like to see the definitions for the other inputs as well...

I am using Leaflet to present around 90.000 data points. My test code is generated using the plugin QGIS2leaf in QGIS 10.10.1. I am using clustering and reviewing the code I can see that this is "leaflet.markercluster.js". In principle this works well. For practical use I have a capacity...

I'm using QGIS and I am relatively new to it. I have a points layer. Each point is the location of a conflict event and the attributes are the type of conflict, year of the event, number of deaths etc. I also have a polygon layer. The polygons are the areas inhabited by different groups which...

I need to calculate the max M value for a line feature using Python in ArcGIS 10 Field Calculator but I cannot figure it out. In 9.3 I used the follow VBA expression… **Pre-Logic VBA Script Code:**dim m as imcollectionset m = [shape]dim d as double d = m.mmax**EndStation =:**dThanks, Matt...

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I am working in ArcMap 10.3 and exporting through Data Driven Pages (DDP). The DDP export works as expected the first time, but if I use DDP to export again from the same MXD, the program hangs and I have to shut it down through the Task Manager. I can tell if it is going to hang up as soon...

This is strange. Every certain amount of time (2 to 3 weeks) the gdb presents this problem. I've checked every possible line of code in a web app that consumes the layers stored there but do not see the problem (everything is just plain widgets as those depicted in ArcGIS documentation). Any...

Questions: Is there way to leverage GIS tools to author/edit a schematicmap where elements' geometries has canvas-based coordinates rather thanreal-world coordinates on Earth? To possibly achieve this, is there a special Coordinate ReferenceSystem (CRS) that does "No Projection"? That maps an...

I have created an atlas -- i.e. a map with a layer defining some regions of interest -- in QGIS. I can render maps of each region using the "atlas" feature of the print composer, but I want to show different regions with different projections. Is that possible? أكثر...

I am trying to find ways to quantitatively describe the shapes of various polygons. For my project, these polygons represent lakes, rivers, lagoons, and parks. So they can be almost any shape. One easy metric is to calculate perimeter vs. area, which is at best an only slightly useful metric...

I need to use Python to create a great circle distance -- both a number, and preferably some kind of 'curve' that I can use to draw in a client-side map. I don't care about the format of the curve -- be it WKT, or a set of pairs of coordinates -- but just want to get the data out. What tools...

Bonjour, J'ai mis en ligne un GeoServer avec dessus des couches vecteur (collection de shapefiles, pas de PostGIS). J'arrive à me connecter et à modifier les couches sur QGIS via le menu "ajouter une couche WFS". Mais dés que j'essaye d'effectuer plusieurs modifications en même temps avec...

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new to StackExchange, I've got a geoprocessing script, that I need to move to a new server. However, this was created a few years ago and I wasn't the one who made it, so I've run into some problems. This is the script: ## Script to export map from #### Flex Viewer s ####...

This is my first time posting, so I hope my question is clear. System: Windows 7, ArcGIS 10.2.2, (no clue how to do python) Data: A line shapefile of fault traces. Wanted Result: An ASCII-type file with a .lin extension. This file should have XY data for every node in the line. The format of...

I am using ArcGIS Desktop 10.0. I have a trick for removing the donut holes, which is converting the polygon to line and then creating polygon out of the lines and in the end merging all of them. The drawback of this strategy is that in removes other holes and empty areas which in reality are...

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So here's the problem. I have two rasters containing bathymetry data: one containing the bathymetry of the sea floor, we'll call this raster1, and another containing the difference between two previous scans of the same area, but only where the difference is negative. We'll call this raster2. I...

out_tin = output_folder + os.sep + file out_tin = out_tin.replace(file,river_mile) arcpy.CreateTin_3d(out_tin,sr,"pointfc_filenames Shape.Z masspoints ","DELAUNAY") arcpy.AddMessage("TIN GENERATED") print "TIN GENERATED"The errors that i am getting are the following...