Questions tagged [open-source-gis]
Software for which the original source code is made freely available and may be redistributed with or without modification.
540
questions
1
vote
1
answer
63
views
Recreating ESRI projection/transformations in GDAL/OSR/OGR
How can I make sure that the coordinate transformations that I am applying using GDAL/OSR match transformations in ESRI/ArcGIS?
Specifically the ArcPy geometry function, projectAs when taking in the ...
0
votes
0
answers
44
views
Building squaring using JGiscoTools java lib
I`m new in Java and trying to use JGiscoTools java lib for building squaring from .geojson file according to algorithm in this
document
I've tried to use class Squarring of the algo module, but doesn`...
- 1
1
vote
0
answers
109
views
Distinction between "Clip" and "Intersection" tool in QGIS 3
For a project in marine biology we need to calculate the amount of seabed that is protected by official protected areas for each seabed habitat type. To that end, we clipped a seabed habitat layer ...
- 11
0
votes
1
answer
64
views
OpenGIS Tile data server for Cesium?
I'm investigating my options for local hosting test GIS data for use with Cesium front ends. I have seen this project: Cesium Terrain Server but it seems quite old.
I thought I read somewhere that ...
- 173
4
votes
1
answer
347
views
Exporting multiple layers with different geometry types to one MapInfo TAB file in QGIS
It is no problem in QGIS to open MapInfo .tab files with combined geometry type. If a single .tab file contains points, polylines and polygons then QGIS will load three separate layers for each ...
- 184
0
votes
1
answer
47
views
PDF or HTML versions of Spatial Query Lab (FOSS4G Academy) lectures by Rick Smith
I am Spatial Science Teacher at TAFE NSW teaching Spatial Information Systems online. In 2019 our department started including links to many of the Spatial Query Lab SQL lectures in our resources. We ...
- 27
1
vote
1
answer
740
views
Extracting LAS/LAZ info in a performant way with PDAL?
I can do this:
import json
import subprocess as sp
laz_file = somefile.laz
r = (sp.run(['pdal', 'info', laz_file], stderr=sp.PIPE, stdout=sp.PIPE))
json_info = json.loads(r.stdout.decode())
and ...
- 1,325
-2
votes
1
answer
155
views
Seeking open source alternative to Spatial Analyst / 3D Analyst toolbox of ArcGIS Desktop
Is there a decent open source software alternative for the Spatial
Analyst / 3D Analyst toolboxes of the ArcGIS environment?
The main goal would be to demonstrate DEM interpolation and/or ...
- 1,066
0
votes
0
answers
72
views
How to get building elevation and levels
Is there any API or DataSet available to know the Building elevation and levels based on lat and long.
I need data for North America(USA)
- 1
2
votes
1
answer
2k
views
Problem adding add-apt-repository ppa:ubuntugis/ppa
Since upgrading my Ubuntu to focal (Ubuntu 20.04.1 LTS) I get the following error every time that I update/upgrade my system:
Err:8 http://ppa.launchpad.net/ubuntugis/ppa/ubuntu focal Release
404 ...
- 121
1
vote
4
answers
669
views
Seeking ArcGIS focal statistics alternative in open source Python
I am struggling to do the pixel aggregating of raster in open-source python as similar to the ArcGIS Focal statistics function does, I would like to make a 5 x 5 rectangular window on which the ...
- 111
0
votes
0
answers
36
views
is there a open source way to georeference a non geospatial vector (like eps, svg etc)?
Is it possible to reference a non geospatial vector file such as eps, pdf, svg, dxf etc.?
The vectors I'm talking about are points and lines without any georeferences, but the size, the position and ...
- 7,663
1
vote
0
answers
215
views
Seeking Open Source Alternatives for FME [duplicate]
Do you know any good open source alternatives for FME?
Searching for some free but powerfull alternatives for geodata management, workflows (Python APIs), etc.
- 481
0
votes
0
answers
395
views
Gram-Schmidt pan-sharpening in open source Python
I am looking to use the Gram-Schmidt pan-sharpening method in Python but I can't find any libraries that have this as an option. I found this, but I don't understand where to even go after reading it ...
- 477
-1
votes
1
answer
330
views
Seeking open source tool for 3D Interpolation
Empirical Bayesian Kriging 3D (EBK3D) looks to be the tool I need within ArcGIS. It requires a GeoStatistical Analyst license.
Is there is a similar tool or library that is free and open source?
I'...
- 11
1
vote
2
answers
147
views
Layman friendly method to create a shapefile [closed]
I have a few projects where I'm plotting various things on a map that's broken down by neighborhood (this, basically). It's looking like I need to make my own shapefile but with absolutely no GIS ...
- 27
0
votes
1
answer
57
views
Seeking GIS Solutions for land management? [closed]
I am working at real estate company.
We need to use a GIS solution for land management.
Which is better Open source or Esri Solution?
A big problem with Esri for me is its Licence. I need more ...
2
votes
1
answer
130
views
Compress Large size of satellite image by Open Source GIS software [closed]
I have a new challenge to compress large size of satellite image from 59GB to 10GB as maximum size by Open Source GIS software to publish it to GeoServer.
- 1,095
2
votes
2
answers
3k
views
Rasterizing ungridded XYZ (LiDAR) files? [closed]
I have a large set of ungridded xyz text files (LiDAR point cloud) and want to export them to any raster format (tiff, asc, gridded xyz...) for further GIS processing.
The source: https://www....
- 7,663
0
votes
1
answer
97
views
ODLStudio Matrix Size Problem
The reason I'm asking this question here is that I've seen a thread about ODL already. Let me know if I'm in a wrong place.
I'm trying to crosscheck a route plan using ODL Studio, which uses JSpirit ...
-1
votes
3
answers
686
views
Open source solution to convert CAD annotations to DXF/GIS vector format?
Looking for an open source solution to extract CAD annotations to one or several common OGR vector formats (DXF, Geopackage, shapefile ..). Output data must contains at least text and rotation.
- 27
1
vote
0
answers
170
views
Failed to load the GDAL native libs for GeoServer 2.15.0 [duplicate]
2 days searching and looking for a guideline to enable GDAL extension for GeoServer, I found many questions here and I followed all steps, but unfortunately the problem still exist the default raster ...
- 1,095
1
vote
1
answer
3k
views
Searching open source Terrain and Satellite maps for Leaflet
For our project, we are exploring Terrain and Satellite maps using Leaflet.js
While exploring the Internet got this OpenTopoMap. However, not sure whether this is a Terrain Map.
For Satellite got ...
- 121
1
vote
0
answers
135
views
Seeking open source tools to visualize map projection distortion? [closed]
A reference article on Map Projections contains the following figure:
I think the images are created using Geocart, listed in Additional Resources section. I'm interested in trying to create ...
- 4,406
0
votes
1
answer
163
views
How do I contribute to opencv-python? [closed]
I have an implementation of a computer vision algorithm in python. I would like to contribute this to opencv-python. This is my first time contributing to FOSS. How should I go about it?
- 3
0
votes
1
answer
1k
views
Reading Esri File Geodatabase (.gdb) from .NET?
I have been reading various threads on reading (not writing) an ESRI file geodatabase (.gdb). What I need to do is process a feature class in a geodb and extract the vertices of each feature. I do not ...
- 427
0
votes
1
answer
50
views
Seeking GIS Navigation App for High Accuracy Data? [closed]
Are there any mobile GIS applications that I can use to navigate to high accuracy data on android?
I would like to load layers - a .shp or .kml and use the map to navigate to points.
It needs to be ...
- 113
4
votes
6
answers
1k
views
Seeking (Open Source) Mobile GIS app for survey?
I'm going to do an on-site survey for a business area development research.
Therefore I'll visit all of the biggest business district from a medium-scale city (100,000 population) to check present ...
- 141
5
votes
1
answer
5k
views
Accessing raw data from LAZ file in Python with Open Source software?
Is there anyway to access raw "LAZ" (not LAS) datasets in Python? I was trying to with ArcPy (I'd prefer not too), but it doesn't seem able to access LAZ. I'd prefer to work with the raw LAZ file and ...
- 4,365
0
votes
2
answers
408
views
Network/Routing analysis with open source GIS
I am researching for ways to do network analysis or routing optimization with open source GIS. ArcGIS currently has an extension for this called Network Analyst but would like to keep my analysis with ...
- 427
1
vote
0
answers
245
views
Importing WFS Feature in ArcGIS Desktop? [closed]
I am trying to Import an open source WFS Feature in ArcGIS. I have filled all the Options correctly but the Toolbox does not work and I receive error that feature is empty.
How can I correct it?
...
- 61
5
votes
2
answers
7k
views
Adjust leaflet routing machine draw (animate) route speed
I use leaflet routing machine and it's working fine with me.
Here is my code:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<...
- 51
3
votes
3
answers
2k
views
Focal / Moving Window statistics - open source
I am currently running a process that involves the creation of many "Focal Statistics" rasters in ArcGIS. These rasters use varying-radius circular search areas and calculate three different ...
- 343
1
vote
0
answers
67
views
Seeking open source equivalent to .mpk?
Is there an open source equivalent to the .mpk file format that ArcGIS can still open?
- 31
0
votes
1
answer
372
views
Is there an open source stereoscopic interface for QGIS, like PurVIEW or DAT/EM, or stereo Analyst?
I have a lot of imagery processing that I do at the local college, and most of the imagery is stereo imagery. Is there an open source piece of software that could be used to view the imagery and ...
3
votes
2
answers
268
views
Geocoding sensitive addresses without API
I have a large set of sensitive addresses that I need to Geocode on a server. I cannot send them to an external API due to HIPAA restrictions. Ideally I'd love to use an open source solution, even ...
- 133
2
votes
2
answers
1k
views
Opensource bus route planner
Since I have little coding skills, I'm looking for an open source bus route planner that consumes GTFS data (That I have to create myself), All I could find was OpenRouteService, and although it has ...
- 371
5
votes
3
answers
6k
views
Convert dwg (CAD) to shp in any open source GIS software?
I would like to do what's needed in a GIS (GRASS, QGIS, etc) alone, no other converters-only.
The process is to read the dwg files that would be located in a folder and read them as shp and perform ...
- 61
0
votes
0
answers
565
views
Tiling large single GeoTIFF raster into smaller GeoTIFF tiles? [duplicate]
I have traditionally used proprietary software tools for tiling raster datasets but I am keen to explore the open source solutions as well.
Are there any open source solutions that can easily tile ...
- 1
1
vote
1
answer
104
views
Is there a way to use ancient cities data with OSMnx?
Is there a way to use OSMnx to construct graphs and images of ancient street maps, perhaps using a data source similar to OSM (in the spirit of OHM)?
For example, is there a way to construct such a ...
- 191
0
votes
0
answers
17
views
Using Geoserver and PostgreSQL to build a web mapping tool? [duplicate]
I've been an ESRI user and a Carto user and like both tools but I am now hoping to build my own web-mapping platform. The issue is, I have no web-development experience other than the little I've ...
- 163
3
votes
1
answer
825
views
Using python Point-In-Polygon operation to join grid with points based on points falling within grid?
I want to know how to select values from the xarray DataArray based on the location (geo_df.geometry) and time (geo_df.plant_date & geo_df.cut_date) of rows in the geopandas GeoDataFrame. I want ...
- 153
0
votes
0
answers
763
views
Create read MapInfo using C#
I've Mapinfo .tab files (including .dat .id .map) I'd like to read the attributes of the files then may store in a DB or write to a csv (not yet decided).
As far as I can tell, using MapInfo Pro ...
- 21
3
votes
1
answer
554
views
ArcGIS region group open source equivalent in numpy/python?
I am trying to get a unique ID for contiguous raster objects with the same value, like what the Region Group tool from ArcGIS does. However I need an open source solution using python/numpy/gdal/...
- 1,445
1
vote
0
answers
152
views
Seeking open source alternative to RivEX (add-in for ArcGIS designed to process vector river networks) [closed]
I wish to process a river network - for the assessment of hydrological potential. RivEX is one addin (not free) which could be used with ArcGIS.
Is there any alternative to this?
1
vote
2
answers
180
views
Open source desktop GIS for high school curriculum?
I am a physics teacher and contemplating to integrate GIS to our high school's curriculum. A de facto software looks to be ArcGIS, which is a proprietary software.
I wonder what are open-source ...
- 121
2
votes
0
answers
523
views
Select border region from segmented image
I have several thousand aerial photographs which have been scanned in and orthorectified, but the image borders and fiducial markers remain on the image. I am looking to identify these parts of the ...
- 307
3
votes
1
answer
2k
views
Converting DEM to LAS file? [duplicate]
Is there a way to convert a DEM raster to a .las file using open source software and/or any tools that come along with a complete ESRI license?
I have been able to achieve this using the LAS Toolset ...
- 357
1
vote
0
answers
921
views
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 ...
- 2,965
5
votes
3
answers
2k
views
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 ...
- 50.2k