Questions tagged [open-source-gis]

Software for which the original source code is made freely available and may be redistributed with or without modification.

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1answer
51 views

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 ...
-1
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1answer
412 views

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 ...
1
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1answer
64 views

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 ...
3
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1answer
375 views

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 ...
2
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1answer
4k views

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 ...
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2answers
169 views

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
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1answer
268 views

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 ...
2
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1answer
694 views

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. ...
3
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3answers
1k views

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\...
2
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1answer
3k views

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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0answers
31 views

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 ...
1
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1answer
592 views

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 ...
0
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1answer
877 views

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 ...
2
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3answers
795 views

Open source ESRI ArcGIS REST API compatible server?

Are there any open source tools out there that can provide an ESRI ArcGIS REST API compatible interface or similar functionality? Many of our clients are running ArcGIS software and are asking us for ...
1
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1answer
230 views

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 ...
3
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2answers
731 views

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 ...
3
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0answers
251 views

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 ...
1
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1answer
175 views

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 ...
1
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1answer
152 views

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 ...
3
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2answers
730 views

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 ...
1
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0answers
71 views

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 ...
2
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2answers
1k views

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 ...
0
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1answer
416 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
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2answers
1k views

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 ...
1
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0answers
28 views

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 ...
3
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4answers
2k views

Get lat lon extent of country from name using Python?

Is there any open source GIS function in python to get lat lon window given only country name. Something like: get_country_window('United states of america') should return: [-135, -50, 22, 50]
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3answers
3k views

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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2answers
101 views

Geographic information system [closed]

I need an open source Geographic information system software for windows in c++, c# or java (I do NOT need python) To edit point then sent to any SERVER???
0
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1answer
85 views

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 ...
1
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2answers
221 views

Performing classification and vectorization for batch of rasters

I have a batch of rasters (circa 8000 GeoTIFF near-infrared ortophotomaps, 12-15 MB size each). I am looking for way to perform bulk classification (supervised or not) and vectorization (to shapefile) ...
1
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0answers
44 views

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
votes
1answer
2k views

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'...
3
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1answer
109 views

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 ...
2
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0answers
117 views

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 ...
6
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2answers
558 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 ...
-2
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2answers
330 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?
0
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0answers
90 views

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 ...
0
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1answer
143 views

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 ...
2
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0answers
85 views

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 ...
3
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3answers
428 views

In transferring a family cemetery layout to a digital format, I need a software program [closed]

We have a large historic family cemetery. I've had surveying experience, drafting in the days when it was done by hand, and a lot of real estate experience with deed descriptions and layouts on maps. ...
0
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1answer
50 views

API or Datababse for Atlas like data

Is there any database or API that can provide data present in Atlas books for example, list of countries, population, temperature etc.
6
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4answers
6k views

Options for visualizing LiDAR data on (Mac) OS X?

I've recently come across open data LiDAR files for the city of Vancouver. I'd like to view it on my Mac (2011. 10.6.6 OS). My intention is to use the LAS file to identify what the tallest trees are ...
1
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1answer
596 views

How can I write private tag GDAL_NODATA to a TIFF using libtiff?

In an earlier post I asked how to retrieve this tag from TIFF using python and libtiff. Eventually I found the answer and I reported on the solution last week. I also realised that in order to write a ...
2
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1answer
132 views

Why ArcGIS Runtime SDK for .NET Toolkit is made as open source?

Is there any specific reason for making only ArcGIS Runtime SDK for .NET Toolkit an open source project where as the actual ArcGIS Runtime SDK for .NET is proprietary? Though this question sounds ...
1
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1answer
99 views

Open source replacement of ArcGIS select command

Is there an open source (gdal, pyshp, shapely etc.) programmatic option to the select command in ArcGIS. I want to select polygons within a shapefile based on an attribute value. This command is here: ...
2
votes
1answer
360 views

How can I retrieve private tag GDAL_NODATA from a TIFF using libtiff?

In an earlier post I reported about my attempts to read TIFF with data stored in tiles using python and libtiff. First I tried to use libtiff's function TIFFReadEncodedTile but finally I tried ...
7
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1answer
506 views

What is the correct format for APA referencing maps produced in QGIS, including data layers?

I need to cite maps produced in QGIS. In addition to my own data, I have used the opensource MapQuest OSM basemap, and a 25m land type data layer obtained from Digimap. I would also like to include ...
1
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0answers
36 views

How can I connect seven schools worldwide to create and share QGIS projects? [closed]

I am looking at a possible programme to connect seven schools ( all English capable ) located around the world to set up and share QGIS data and projects about their own local area among the group. ...
1
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1answer
231 views

Juno 3D open source software

Is there an open source software that I can use to collect data with the Juno 3D GPS? I'm hesitant to buy a Terrasync or ArcPad license.
3
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0answers
145 views

Open source alternative to the “Contours with Barriers” Tool in ArcGIS

I am trying to create a contour file for the globe for a project and am using open source GIS software packages. I was trained for several years on ArcGIS and there is a tool to create contours with ...