25 votes

Seeking QGIS plugin to work with What3Words

Using a simple w3w wrapper here: https://github.com/what3words/w3w-python-wrapper I wrote a custom python function to return the what3words given a location. Once hooked into the expression engine, ...
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  • 51k
24 votes

Choosing OpenLayers or Leaflet?

Though I used Leaflet in my webGIS application, OpenLayers has much more advantages over Leaflet. For example if you want to use your application in mobile devices, OpenLayers is a must for the time ...
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  • 373
22 votes
Accepted

Viewing LiDAR data from web browser?

I'm a little late to the party but here is another suggestion: http://potree.org/ It's an open souce, WebGL based point cloud viewer I've been working on for quite a while. == UPDATE == It can ...
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  • 473
22 votes
Accepted

Seeking tool to generate Mesh from DTM?

A DTM raster can be represented by triangle meshes by finding a set of non-overlapping triangles that covers the entire mesh and approximates the elevation field. There are two different types of ...
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  • 6,556
19 votes

Clustering spatial data in R?

Here is a solution based on Find clusters of points based distance rule, but using the distm function from the geosphere package: library(sp) library(rgdal) library(geosphere) # example data from ...
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  • 311
14 votes

Choosing OpenLayers or Leaflet?

There is a great comparison on the two frameworks in this presentation: And another article also has a great summary: Customers often ask us, “Which is the best client-side JavaScript mapping ...
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13 votes

Thinning large LiDAR point cloud?

It sounds like you want either a voxel-based thinning or maybe a Poisson-based one. PDAL can do either. See PDAL's tutorial on the topic at https://pdal.io/tutorial/sampling/index.html . As far as ...
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13 votes

Seeking alternative to Google Maps Elevation API

I've been working on opentopodata.org as a free, open alternative to the Google Maps Elevation API. Request URLs look like this: https://api.opentopodata.org/v1/eudem25m?locations=51.875127,-3....
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12 votes

SLD Editor with GUI?

I did a lot of trial-error tests with SLD lately, and my sum up is use Atlas Styler. They have problems with certificates (version 2.0), newest Java runtime refuses to launch the app, you have to ...
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  • 261
12 votes

Comparison of open data portal solutions

This question has been converted to Community Wiki and wiki locked because it is an example of a question that seeks a list of answers and appears to be popular enough to protect it from closure. ...
12 votes

Seeking GIS that can calculate fractal dimensions?

QGIS could too via a plugin it seems : Minkowski fractal dimension calculation for vector layer features SAGA GIS seems a good candidate : Library Fractals - Bifurcation - Fractal Dimension of ...
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  • 7,478
11 votes

Working with LiDAR data using other than Esri software?

I develop an open-source GIS called Whitebox Geospatial Analysis Tools that can be used to perform a range of tasks geared towards processing LiDAR data. It works with the popular LAS file format as ...
11 votes

Seeking online WKT editor?

Take a look at Wicket, it's awesome: http://arthur-e.github.io/Wicket/sandbox-gmaps3.html The demo sandbox might be enough for you, if not you could probably use it to develop a simple Javascript ...
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  • 359
11 votes

Seeking QGIS plugin to work with What3Words

Boundless have recently written a plugin that integrates What3Words in to QGIS. The plugin allows you to zoom to a What3Words address and also to click on the map and display the What3Words address of ...
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11 votes

Reading/writing local datastore for QGIS?

How about a local PostGIS instance? PostgeSQL can be downloaded from https://www.postgresql.org/download/ to which a PostGIS extension can be created to make it a spatial database. Also recommended ...
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  • 3,412
10 votes

Working with LiDAR data using other than Esri software?

Since this is being linked to by https://gis.stackexchange.com/questions/132591 (since deleted) I'll add my own two cents with some more free and open-source tools. First, for command-line/batch ...
10 votes

Choosing GTFS editor for creating and exporting routes?

This question has been converted to Community Wiki and wiki locked because it is an example of a question that seeks a list of answers and appears to be popular enough to protect it from closure. It ...
10 votes

Seeking software for opening .img files?

GDAL supports .img format, both the basic Imagine and the extended Imagine (greater than 2GB), thus any software that utilizes GDAL drivers would support ERDAS Imagine. The most workable and well ...
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10 votes

Is there image editing software that will not alter a GeoTIFF's embedded georeferencing?

There are two programs using the libgeotiff library that will let you export and import georeferencing info from GeoTIFFs (and other image file formats): listgeo for saving the georeferencing info ...
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  • 51.4k
9 votes
Accepted

What web mapping libraries are suitable for indoor maps?

I have been making my own map app using my own picture maps. Our university shifted to a new campus and I am mapping out 7 storeys (indoor), with 5 levels of zoom, from hand-drawn maps. Leaflet is ...
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  • 206
9 votes
Accepted

SLD Editor with GUI?

QGIS has a OpenGeo Explorer (for GeoServer) plug-in that you can create new SLD styles based on your feature symbology, then push to your server. You may also use uDig web GIS app. to pull in ...
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  • 34.6k
9 votes

Seeking tool to generate Mesh from DTM?

We have just created an open source project that will help you do exactly what you want. Tin-Terrain is a simple command line tool that will generate a mesh from DEM files either as TIN or TRN. The ...
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  • 245
8 votes

Converting GeoJSON to Python objects?

My lib PyGeoj is specifically meant as a geojson file reader and writer, with a simple API that turns the file contents into objects with attributes, so you don't have to deal with the dictionaries ...
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8 votes
Accepted

Is there image editing software that will not alter a GeoTIFF's embedded georeferencing?

Try using Paint.NET. As of my last testing (GIMP, Affinity, Photoshop), this is the only "traditional" image editing software to properly preserve GeoTIFF metadata. Be aware that at current, not ...
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  • 2,599
8 votes

Looking for an open-source Java based GeoTIFF library

Install OpenJUMP and study what all has been gathered into it I have never really understood what all the alternatives are. ImageIO-ext is probably utilising native GDAL binaries if such are ...
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  • 51.4k
8 votes

Pix4D vs. Agisoft Photoscan

You would have more control over what you are doing in Agisoft Photoscan, meaning that you would be able integrate various python scripts to increase efficiency and automation of processing in Agisoft ...
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8 votes
Accepted

Seeking open source GIS web server

If you use QGIS, you have at least two options to publish your maps without dealing with a server: install qgis2web-Plugin and generate web-maps with openlayers or leaflet: - you can upload the ...
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  • 40k
7 votes

Open Source equivalent to Collector for ArcGIS to use with QGIS/PostGIS?

NextGIS Mobile, native Mobile GIS for Android - http://nextgis.com/nextgis-mobile Offline editing - check. Syncronization - check. Caching raster tiles - check. Connects with web-server instance (...
7 votes

Software for direct editing of DBF file

I always keep a Portable OpenOffice Calc (or Libre Office Calc) for editing DBF files. Here's a link (I haven't tried): http://portableapps.com/de/apps/office/openoffice_portable It is possible to ...
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  • 604
7 votes
Accepted

Looking for an open-source Java based GeoTIFF library

I believe that I have found an adequate solution that meets all of my requirements. Thanks to user30184's answer, which pointed me in the direction of ImageIO, I was able to find an alternative Java ...
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  • 10.8k

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