Questions tagged [open-source-gis]
Software for which the original source code is made freely available and may be redistributed with or without modification.
39
questions with no upvoted or accepted answers
4
votes
0
answers
120
views
Blend overlapping DEMs using Open Source / Python
I'd like to blend edges of overlapping DEMs such that the join is a smooth transition (for use with InSAR). Apparently the best interpolation kernel for this, according to the literature, is thin ...
- 131
3
votes
0
answers
465
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 ...
- 137
3
votes
0
answers
184
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 ...
3
votes
0
answers
1k
views
Open Source True Ortho Software
My work does true ortho rectification. We are looking to transition into a more open source company. One of the processes we are looking to "open source" is true ortho. Does anyone know of a ...
- 9,479
3
votes
1
answer
579
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.
- 39
2
votes
0
answers
4k
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
2
votes
0
answers
782
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 ...
- 305
2
votes
0
answers
556
views
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
votes
0
answers
168
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 ...
- 5,034
2
votes
0
answers
382
views
Reconstituting features from E00 format, without ArcGIS
Recently I used OGR to convert an ESRI E00 format file to shapefiles. I am dealing with vector data, many polygon features per file. I was dismayed to find that none of the resulting shapefiles(you ...
- 83
2
votes
0
answers
171
views
Warp polygons/lines from distortion grid, or similar
Anyone have any ideas how I might go about warping polygons or line based on point based distortion map?
Specifically, let's say I have a (non-regular) point data set. I create a clone of the data ...
- 391
2
votes
0
answers
214
views
QGIS 2.2.0-Valmiera 64bit on windows 8.1 displays error while creating ROI in SAC plugin
I don't know what happened while creating ROI during Classification using Semi automatic Classification Plugin 3.1.0 "Rome" installed on hp Pavillion i7 with windows 8.1
When i started to generate ROI ...
- 539
2
votes
0
answers
799
views
How do I automatically generate a spatial data catalogue from shape files and .gdbs?
I've recently inherited a whole bunch of spatial data (mostly shapefiles but some .gdbs) which relate to a bunch of different cities. I'm looking for a way to take an inventory of what data I've got ...
- 549
2
votes
0
answers
677
views
Open source space time series database management system
I am aware of the existence of space time DBMSs such as Druid, InfluxDB or OpenTSDB. Is there anything like it for spatially explicit data? A time series extension for a common spatial DBMS (say, ...
- 3,935
2
votes
0
answers
1k
views
GeoServer WFS Speed
I have set-up a machine running Windows Server 2008, and GeoServer 2.1.3. PostgreSQL 9.1/PostGIS 1.5.3 are running locally on that same machine, which is hosted at a location with a 250 megabit/...
- 21
1
vote
0
answers
522
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
1
vote
1
answer
740
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 ...
- 543
1
vote
0
answers
91
views
Seeking open source equivalent to .mpk?
Is there an open source equivalent to the .mpk file format that ArcGIS can still open?
- 31
1
vote
0
answers
1k
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 ...
- 3,285
1
vote
0
answers
314
views
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
1
vote
0
answers
175
views
Open-source tools for run-off depth calculation
I am working on modeling surface run-off (in ArcGIS 10.2) due to a rain event (e.g., 5 year rain for a duration of 30 mins.) over an approx. area of 30 km2 for which I have a DEM and necessary soil as ...
- 51
1
vote
1
answer
168
views
Free software to publish tiles on Amazon S3?
Does anyone know of free software that would allow me to publish tiles on Amazon S3? I know of Arc2Earth, but it is not free.
- 191
1
vote
0
answers
103
views
Is ther open source tool for calculating Getis-O-ord (ARCGIS) and able to customize in own platform
i would like to know is there any open source tool for calculating Getis-O-ord(ArcGIS)? If so can i customize for own application or can i write my script within that application like qgis.
- 320
1
vote
0
answers
121
views
Split polygon into four with respect to single point
Some days ago one of my colleague came to ask me a query related to Geometries.
The situation is as.... There is one Polygon (suppose a city polygon) and there is one point (suppose user's current ...
- 619
1
vote
0
answers
475
views
How can I edit spatial data automatically on postgis and check for topology errors on said data whitout using shapefiles?
So, I have spatial data stored in postgis (points, lines and polygons) and would like to edit and update those in an Open Source software (quantum GIS, grass, etc.) to check for topologic errors, ...
1
vote
0
answers
563
views
Are there any exisiting .NET implementations for WFS that are extendable?
I've been told its a bad idea to implement WFS from scratch:
Implementing WFS within .NET
Does anybody know of any exisiting .net implementations that I can extend?
- 128
1
vote
0
answers
403
views
How to shift vertices of shapes in shapefile using FOSS python library?
I need to shift each vertice of shape in a shapefile (of any type:point, line, polygon, multiline etc.) with Python. I need to loop in all shapes, get the vertices, get it's coordinates and for each X,...
- 483
1
vote
0
answers
166
views
Creating Raster with values based on function output
I have a function that calculates a price based on the input slope and distance. I want to write the price to a raster as the rastervalue. How do I do that? OpenSource and ArcMap solutions would work.
...
- 7,994
1
vote
0
answers
157
views
How can I assign road names from OSM to gis linestrings using open source tools?
Starting with a shapefile of linestrings I want to assign street names to these lines if there is a match with a road/street in OpenStreetMap.
There are no exact matches as the linestrings have a ...
- 1,565
1
vote
0
answers
195
views
Overlaying user raster datasets on nasa world wind
Currently I am developing a desktop application with Nasa world wind JDK for 3d visualization of my data sets, but when i overlay my raster data sets those are vertically exaggerating with the default ...
- 11
1
vote
1
answer
84
views
Atmospheric correction for Airbus imagery
I have purchased images from Airbus using sentinel hub and realized that they are TOA (top of atmosphere). I would like to apply atmospheric correction on the images.
I have seen the FLAASH is very ...
- 2,139
0
votes
1
answer
507
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
0
votes
0
answers
166
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
0
votes
0
answers
67
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 ...
- 8,262
0
votes
0
answers
950
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
0
votes
0
answers
223
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 ...
- 3,378
0
votes
0
answers
326
views
Exporting basemap & Layers as an image?
I need a open-source server-side component for a web-application that can export basemaps + layers to an image format (saved on a db).
Being slightly new to GIS, I've managed to find a few tools that ...
- 111
0
votes
0
answers
690
views
Calculating distances between boundaries of polygons with Python
I have two sets of shape-files which have to be worked on within a Python Script. Those two Shape Files might differ from each other (same thematic content, but 2 different epochs).
If there occurred ...
- 457
-2
votes
1
answer
229
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 ...
- 1,186