Questions tagged [open-source-gis]
Software for which the original source code is made freely available and may be redistributed with or without modification.
541
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Open source convert .idb .mdb database
Is there a way to convert a geodatabase (ArcGIS Geodatabase Version 9 according to their website) to other formats such as shapefiles / geopackage for feature layers and geotiff for rasters using a ...
- 3,285
5
votes
3
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2k
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Open source approach to classifying and removing LiDAR points from overlapping scans?
The attached screenshot shows a LiDAR point cloud with significant overlapping scans. This point cloud tile is part of the MN statewide LiDAR dataset which has 25% scan overlap and 1.5 NPS. For many ...
- 51.7k
2
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1
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712
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Open source alternative to Linkage Mapper & ArcGIS [closed]
I'd like to calculate least cost paths between fragments using a cost raster I created based on habitat suitability values.
I saw that most people use Linkage Mapper, but I don't have access to ...
- 567
2
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0
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556
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Open source absolute atmospheric corrections for Sentinel-2
I am searching for open source absolute atmospheric correction processors for Sentinel-2. There are many of proprietary ones (FLAASH, QUACS, MACCS) which I cannot use for my study.
Beside DOS1 (QGIS ...
- 533
-2
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1
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504
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Open source remote sensing and satellite imagery DATA [closed]
What are the most known libraries of open source data related to remote sensing and satellite imagery? Especially applicated to agriculture? And what are their resolutions and frequencies?
- 249
3
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2
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716
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Finding tie points between a georeferenced and a non geo referenced image
Is there an open source program for finding tie points between a non-georeferenced image and a georeferenced image? I am looking for something I can run at the command line in linux to incorporate ...
- 319
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2
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509
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How to draw maps with OpenLayers without subtitles?
I'm developing an application, using OpenLayers and OpenStreetMap, which can not have some subtitles, because it pollutes the map, subtitles like this:
this is my code
defaultRasterLayer = new ol....
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0
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314
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Pure PHP Library for Geometry Operations 7
I am working on a php project on a shared webhost. so I am limited into mysql and php. I want to do some geometry operations in php side. In fact it is a routing algorithm which works in php. I need a ...
- 625
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2
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327
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Processing historic aerial imagery mosaics
I'd like to process multiple sets of old (>1938) aerial imagery that are scanned, but whether merged nor georeferenced. While I had good results with QGIS to align single photos, using passpoints, ...
- 117
3
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1
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913
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How to import erroneous geometry records into PostGIS for fixing?
New to PostGIS. I have a few large multipolygon datasets with errors that PostGIS should be able to fix quite efficiently. However, when in QGIS I try to import the layers into PostGIS, it will ...
- 1,507
4
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1
answer
3k
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Field data collection for QGIS? [closed]
I'm new to the open-source GIS world, having abandoned ArcGIS due to costs, and am looking for an OS analog to the Collector app. What I'm seeking to do is collect field data with an Android cell ...
- 109
2
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1
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1k
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Couldn't load plugin GniPlannerFTTH [closed]
I am using FTTx Planner (Open Source element of Geospatial Network
Inventory system) but when I try to use GniPlannerFTTH plugin in QGIS I get the following error:
"Couldn't load plugin ...
- 21
0
votes
1
answer
583
views
Exporting multiple shapefiles (mixed geometry types) into one KML?
Is there a way, using open source software, to export multiple shapefiles of mixed geometry types, and different attributes, into one KMZ/KML file?
Something similar to from ArcMap "Map to KML", but ...
- 2,440
2
votes
1
answer
51
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How could we get presentation of FOSS4Geurope 2017?
I was to the FOSS4Geu 2017 and I could not see all the presentation I would to see. So, as the great team try to get all of them, I thought it's possible to get it throught the website.
Unfortunatly I ...
- 2,191
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1
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1k
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Photomosaic non-georefferenced images using open-source software
I have a directory of images that were captured by drone. The images have GPS info in the EXIF tags but are not georefferenced and do not have world files. I would like to merge these photos into a ...
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109
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How do I patch libgeos without losing QGIS?
How can I create a custom libgeos to replace the one in my Ubuntu system?
Basically, I'm trying to expose some of GEOS functions (orientedDistance()) to other packages as explained in Directed ...
- 11.1k
3
votes
1
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915
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How to use Cesiumjs without bingmap api key
Can I use cesiumjs without bingmap api key. I need to create a viewer which should use my own wms layer and osm. Further i want to use it as a platform for geospatial analysis on my spatial data. As i ...
- 313
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1
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10k
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How to create line/polygon shapefiles from geojson using gdal in Python?
I have put this together after reading How to create polygon shapefile from a list of coordinates using python gdal/ogr?, and How to write Shapely geometries to shapefiles?
I am attempting to read a ...
- 1,507
1
vote
2
answers
246
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Open Source GIS tools for using LiDAR to estimate storage behind dams/culvert [closed]
Can you recommend an open source GIS tools for modeling the water impounded on the upstream side of a dam using LiDAR data?
- 2,090
2
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1
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337
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QGIS Rule-based rendering in 2.14
I'm going through the QGIS Map Design book and have run up against a wall in adding cascading rules. I'm working with QGIS LTR 2.14. The authors recommend this version.
My vector data is in a ...
- 1,507
2
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2
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1k
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QGIS: sip module implements API v11.0 to v11.3 but the qgis._core module requires API v10.0
I have read all the questions on the SIP module and QGIS, but they do not answer my question. Most of these are dealing with screwed up paths; I do not think my environment variables are incorrect.
...
- 1,507
5
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3
answers
3k
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GDAL/OGR (Python) GetGeomType() method returns integer, what is the matching geom type?
When I use the GetGeomType() with GDAL/OGR it returns an integer. I want to know what geometry type each integer represents.
driver = ogr.GetDriverByName("FileGDB")
gdb = r"C:\Users\******\Documents\...
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2
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Current status of open source 3D GIS software and libraries
I'm an open source advocate and been asked to present to a top management in government regarding the availability of open source 3D tools and software that leads to SmartCity/SmartNation initiatives. ...
1
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0
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61
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Reposition geotagged image on mapoeg [closed]
I am building a map in leaflet, rendering a variety of layers on top of the map.
One layer contains geotagged images fetched from a folder (with Leaflet.Photo).
Some of the images GPS locations are ...
- 525
2
votes
1
answer
2k
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Standard Deviational Ellipse with Open Source Python (GDAL/OGR etc)
I am trying to mimic the Standard Deviational Ellipse tool from ArcGIS through Open Source Python avenues. The formula is here.
At the moment I am failing to get the correct X and Y axis lengths for ...
- 1,700
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vote
1
answer
2k
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Open source solution to convert terrain data to collada?
I am exploring how to convert terrain information (DTED, SRTM, etc) to a 3D mesh file. Collada is preferrable as it is very compatible.
I have read this: Converting dem and geotiff to collada model ...
- 1,507
4
votes
3
answers
2k
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Seeking open source ArcGIS REST API compatible server?
Are there any open source tools out there that can provide an ArcGIS REST API compatible interface or similar functionality?
Many of our clients are running ArcGIS software and are asking us for REST ...
- 239
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votes
1
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465
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Algorithm for calculating the Central Feature using open source Python
I want to use an open source programmatic approach through Python for calculating the central feature of a feature class with over 700 points. At the moment the process in the code below works but ...
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4
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2
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2k
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How to create a sound map using ArcGIS?
I have locations of the points which produce sound. I want to create a sound map based of those points, topography, and the distance at which a sound can travel. On this picture you can see the red ...
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465
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Is there an open source equivalent to ArcGIS "collect events"?
I am looking for an equivalent tool to ArcGIS "collect events" (within the Spatial Statistics -> Utilities toolbox). I wish to aggregate coincident point data in a space where many points lie in ...
- 137
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1
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236
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Suggestions for open source command line resample algorithm that ignores nodata?
I am trying to automate the downsampling of elevation (and other) data using open source software at command line in an automated workflow via use of windows batch files. Currently the workflow uses ...
- 123
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1
answer
250
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Uploading finished model to WebGIS?
A thing bugging me at the moment is the lack of information on the possibility of finishing a point cloud based 3D model in a desktop software(e.g. Solidworks, Geomagic Design), exporting it in a ...
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2
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2k
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How to drape image on surface using open source software?
I have a image with a known projection - say an aerial photo. I also have a raster surface grid with the same projection - say a DEM. Both are in the same projection. Both have the same extent.
How ...
- 462
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100
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GDAL (Or Any Open Source GIS SDKS) | Read ESRI Geometric Network [closed]
I am looking at some legacy ArcObjects code that reads & parses a geometric network. I no longer have access to ESRI license(s) at any level - so legacy code needs to be reworked since ArcObjects ...
- 5,733
3
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2
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3k
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Extracting raster values at points for GRASS GIS
I have points shapefile and a raster file. For each point, I want to extract the raster value which overlaps that particular point. This has been done in QGIS (link below) but I was looking for a ...
- 277
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1
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938
views
3D ground model with open source software?
I am looking for some open source software to plot some borehole logs and create a 3D ground model.
I used to work in a mining environment and used software including Datamine and Mapinfo Discover to ...
2
votes
2
answers
4k
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Converting LiDAR data (.laz) to DSM in .asc format
I'm looking to convert a LIDAR scan in .laz format into a DSM in ASCII Grid format, in order to calculate RF propagation in an urban environment from a given transmission location (bonus: converting ...
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31
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open-source web mapp [duplicate]
What is the most easy way for a noob guy in coding to create interactive web-maps ?
In GIS field I've worked with QGIS as open-source software, but keept my project on desktop.
In my research I've ...
4
votes
5
answers
6k
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Getting lat&lon extent of country by its name using Python
Is there any open source GIS function in Python to get lat&long window given only country name? Something like:
get_country_window('United states of america')
should return:
[-135, -50, 22, 50]
- 111
5
votes
3
answers
9k
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Open source tools to create quantized-mesh tiles for Cesium?
I'm looking for a tool or toolchain to generate quantized-mesh-1.0 tiles that can be used with Cesium. Possible formats for the terrain source are LAS, ASCII Grid or simple XYZ files.
As a first try, ...
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112
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Open Source online software for making maps and displaying data?
I have noticed a number of online maps with data, however I wonder if there are any similar to umap that allows integration of data as in codap and offer features like openwebgis, ideally with an ...
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51
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Creating movie from collection of layers with open source software? [closed]
I have a collection of raster layers portraying a certain spatial phenomenon at successive time steps. I would like to create a video from these layers, with the same colour scheme applied on each ...
- 3,933
6
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3
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4k
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Image segmentation in open-source software
For an analysis of several multilayer raster files I want to perform some kind of image segmentation (multi-resolution, ...) to extract polygon object of similar raster properties. I know that Trimble'...
- 514
3
votes
1
answer
175
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How to Serve a Cached/Mixed Raster to Geocortex
I have never used a Cached/Mixed Raster format before, but I had these air photos given to me and I have to get them served up to our Geocortex App. I've been trying for weeks to covert it to a JPEG ...
- 4,387
2
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168
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Can OpenLayers 3 run without browser or is it designed to be used only in browser?
I need to run OpenLayers app which will render some map into canvas and then I need url of that canvas ( Canvas.toDataUrl() ), I would use NodeJS and Node Canvas to get it done. I wonder can ...
- 5,034
8
votes
2
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818
views
FOSS way of creating space time cube?
I've been experimenting with ArcGIS Pro's "Visualizing Space Time Cube" tool but found that there is a feature limitation when I try to publish it via ArcGIS Online. My goal is to publish it on the ...
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536
views
Finding address geographically? [duplicate]
Is there a way to make Geocode or location address based on a shapefile streets, without using a web service and using QGIS or some open source software?
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223
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Create Service Area free GIS Tools
Is there a way to to something like ArcGIS provides with the Network Analyst with open source GIS tools?
What I am exactly looking for is:
I am having a roadnetwork and in this roadnetwork I have ...
- 3,378
0
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1
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215
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Seeking open source software for post-processing > Utility mapping? [closed]
I am using Mobile Mapper 10 with MobileMapper Field 4.7 Mapping software more mapping of underground,cables and pipes as well as various point features. The standard accuracy is 2m, I need compatible ...
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0
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117
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Gas Utility Routing software in open source or algorithm [closed]
objectives : To make a web application for gas utility that can perform upstream and downstream
I have googled a lot but cannot find any Gas utility routing in open source. what i have is data for ...
- 2,750