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
717 views

Reading las files with laspy [closed]

New to laspy and encountering an error. The first code block describes the file header, the second (In[24]) fails to open the file with laspy: In [21]: import numpy import laspy from laspy.file ...
9
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3answers
1k views

Performing raster map algebra in open source web GIS?

Map algebra for raster is easy with ArcGIS Raster Calculator (or QGIS). I had thought this would be easy with web GIS servers such as GeoServer and MapServer plus OpenLayers etc. as well. What I want ...
4
votes
3answers
1k views

Counting sides or edges of polygon using open source GIS?

I wondered if it is possible to determine the number of sides / edges (not vertices) that a polygon has. Imagine the following case. There is a shapefile with 10 polygons. Is there any way to ...
6
votes
1answer
965 views

Is TileMill opensource?

I was reading this GIS.SE question about whether TileMill will be replaced by Mapbox Studio. I got worried about the future as a TileMill user, and the question suddenly came to me "isn't tilemill ...
2
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0answers
195 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 ...
3
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2answers
743 views

Open Source Interpolation Service?

We are seeking an open source solution for dynamic (on the fly) IDW or Kriging points interpolation. Basically we are looking for something similar to ArcGIS Spatial Analysis Service. Interpolation ...
7
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0answers
5k views

Downloadable, Open Source, IP GeoLocation database

I have an open source project I need a similarly open source IP GeoLocation database for. i.e. IP address to country (and ideally city). Ideally with a license that allows redistribution. This is a ...
2
votes
1answer
2k views

Open-source reader of Leica C10 terrestrial LiDAR proprietary file format

I have a Leica C10 terrestrial LiDAR (laser scanner) system. The system creates and stores point cloud data in a proprietary .bin file. Currently I have to use Leica's proprietary LiDAR software, ...
1
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2answers
949 views

Looking for atmospheric dispersion model with 3d GIS application

is there any atmospheric dispersion model with 3d GIS application that can use DEM and atmospheric data as input ?
-3
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1answer
1k views

Sending Shapefile to SQL Server 2012? [closed]

How can I send a shapefile to an SQL Server table? I have searched and found a tool called ShapetoSQL but I am developing a c# Windows application so I am looking for an Open Source solution.
2
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2answers
1k views

WFS Spatial Operator Query - Crosses AND Within

I'm trying to query my wfs service with a polygon. I want the service to return both features that are inside the polygon and partially inside the polygon. However, when I use the "Within" spatial ...
1
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0answers
94 views

Free And Open Source Software Tools to orthorectify Pleiades imagery [duplicate]

Are there Free And Open Source Software Tools to orthorectify Pleiades, Worldview And Quickbird imagery as we do with COST tools such as ERDAS Imagine, PCI, ENVI, etc.?
2
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1answer
191 views

And/or query on WFS service? [duplicate]

Is it possible to use "and" & "or" queries on a WFS service through the URL? Here's my current URL: http://mywebsite.com/county_roads_wms_only/MapServer/WFSServer?request=GetFeature&service=...
2
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1answer
346 views

Open source geometry service like ArcGIS?

Does anyone know of an open source GIS server that provide similar functionality to ArcGIS' web services server? For example, the service would provide a similar geometry service that buffers feature ...
1
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0answers
208 views

all-in-one gis packages for windows 8.1? [closed]

Is there an all-in-one installer that allows having all open-source gis apps installed in windows 8.1? with all apps I mean for instance postgresql, postgis, mapserver, qgis, grass. I have cygwin ...
3
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2answers
285 views

Recommended opensource solution for storing, publishing and querying GIS data

Our company has millions of feature classes currently stored through ArcSDE on SQL Server 2008 R2. We are kind of slowly making our way to opensource software. What we want to achieve is to be able ...
1
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1answer
378 views

Chosing a GeoCMS server collaboration tool

I have seen a few things about different GeoCms. Researching these, none of them by default to actually seem to be a GeoCMS. Somehow when you hook these up to mapserver they become a GeoCMS. I do not ...
2
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0answers
626 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 ...
15
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2answers
3k views

Open source alternative to ArcGIS geoprocessing service concept?

I am searching for any examples of implementing a logic that Esri has built with geoprocessing services. You author a custom tool or it can be a system tool >> you publish it exposing this ...
2
votes
1answer
857 views

How to convert to web mercator projection using an open source tool?

I've got a KML file which I need converted to a web mercator projection. This file will go into Tilemill. What are some good open source tools to convert files to the web mercator projection?
-1
votes
1answer
48 views

Searching for features? [closed]

With free, open source tools and data, I would like to be able to find (electronically, not by hand) properties (in the sense of "land owned by private individuals") that meet the following sample ...
3
votes
4answers
3k views

Cloud Removal from Landsat Data

I'm trying to remove clouds from Landsat 5,7 and 8 data. I'm also trying to do this using only open source options, avoiding ArcGIS. I'm familiar with python and have some QGIS experience. Originally, ...
1
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1answer
121 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.
1
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2answers
1k views

Open source, Python option for Arcpy's Con tool?

I'm wondering if there is a method to perform a function similar to Arc's Con tool, using open source options in python. I have two rasters, one that shows locations of clouds and the other is just a ...
2
votes
4answers
459 views

Building a WebGIS with search functionality for a charity

I am playing with the idea of building a Basic Web based GIS system for a charity. The problem: I work for a charity that deals with people with Cleft Palates. They currently have a website, but ...
0
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1answer
362 views

Build a Raster GIS Web Application [closed]

We need to build a Web based GIS application for Raster data computation (analysis). All the maps are in form of raster images. We are failing from a week to find a proper tool which allows fetching,...
2
votes
0answers
639 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, ...
1
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0answers
70 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.
1
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2answers
254 views

creating GIS data directly on camera images

If I'm taking few photos with superimposition and enabling a stereo system for images pairs, Is there a software for 3D or 2D calibrating that will enable then creating GIS vector data directly on ...
1
vote
1answer
739 views

Seeking open source web client alternative to Geocortex Essentials? [closed]

What is best the opensource webclient alternative To Geocortex essentials? For someone without much coding experience.
1
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1answer
211 views

Need software to create Info-graphic map

I want to make an info graphic map for history theme hence I am researching on Google for suitable software but not able to find suitable software and very less information regarding available related ...
4
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2answers
75 views

What are license options to share and distribute ArcGIS ModelBuilder toolkit?

Do you have expertise or experience to share on what software license can be used to share a model created in ArcGIS ModelBuilder to ensure that it is free to use, or used for non commercial purposes. ...
1
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0answers
102 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 ...
0
votes
1answer
478 views

Equivalents of Esri products in open source for Web Mapping? [closed]

I have been using the following licensed products to publish my GIS data on web. web server: windows 2008 R2, GIS desktop: ArcGIS desktop, GIS web server: ArcGIS server, API: ArcGIS API for JS, ...
4
votes
3answers
6k views

Workflow to convert a DWG CAD file to a shapefile

I'm trying to develop a workflow where I can convert a .dwg file to .shp. I don't have a good understanding of which tools I should be using. My preference is to use software that runs on OSX, is open-...
8
votes
1answer
1k views

Is there Open Source equivalent to ArcGIS Integrate (for topology correction)?

I need to transform a set of polygons so that it forms an exact spatial partition/tesselation (no gap - no overlap). What are the existing open-source solutions (software or library) to perform this ...
3
votes
3answers
768 views

Applying specific Rendering to Raster and export to JPEG?

We have a specific process which generate an interpolated single band 32-bit Float Raster in Erdas Imagine (.IMG) format. This process generates an image every hour. We wish to apply a specific ...
4
votes
1answer
617 views

Is there an online source of raw contour data?

My goal is to get a vector image (SVG preferably) of a local mountain. The data clearly exists, but as an armchair cartographer without access to raw layer data I've been reduced to combing the web ...
10
votes
4answers
9k views

Choosing GTFS editor for creating and exporting routes?

I am a beginner and I need information about GTFS editors. I want to create routes,trips,patterns,etc... and export it to GTFS-format. I have setup locally two GTFS editors: TransitDataFeeder ...
0
votes
2answers
646 views

FAHP/AHP for GIS in free software?

Anyone knows a free GIS software that implements the Analytic Hierarchical Process (or its fuzzy extended version) ? And while asking, have anyone had any experience with a commercial GIS that ...
4
votes
2answers
2k views

pgAdmin vs psql

I have downloaded postgreSQl 9.3 and Postgis 2.1 recently as an educational adventure and have been working with both through the pgAdminIII interface. I haven't used psql yet when working with my ...
1
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2answers
77 views

How can I determine which polygons contain other polygons?

I am using only free, open source tools. I have two shapefiles: a shapefile of voting precincts and a shapefile of census tracts. I want to know: which voting precincts fit inside which census tracts? ...
5
votes
2answers
898 views

LANDSAT Image classification and open source solution(s)

I have some experience with ERDAS IMAGINE in doing some supervised/unsupervised LANDSAT imagery classifications and now find myself in the position of needing to do the same but without the access to ...
1
vote
0answers
441 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, ...
11
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9answers
24k views

Open source tool to convert a DEM to a 3D model

I would like to convert a DEM (Digitial Elevation Model) file (e.g. from SRTM) into a 3D model that I can then edit with regular 3D modeling tools (e.g. Meshlab/Blender/etc.). However I'm using Ubuntu ...
1
vote
2answers
2k views

How to get an indication of how points are spatially distributed?

Let's say I have a set of points and I want to get an indication of their spatial distribution. That is, if all points are at one location a possible return value would be 0, whereas if all points are ...
7
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4answers
3k views

What are the most efficient Geographic Weighted Regression packages?

What are the most memory efficient open source packages for calculating a geographically weighted regression (GWR)? I am in a situation where I need to do a geographically weighted regression on a ...
6
votes
3answers
3k views

Convert UTM northing and longitude to latitude

I am doing some work with the Military Grid Reference System (MGRS), which is based on Universal Transverse Mercator (UTM). I find that I need to convert from UTM northing and longitude (actually, ...
10
votes
5answers
12k views

Clipping LAS data using shapefile polygons and open source software?

I am trying to clip or filter lidar files (.las, .xyz) using a shapefile that contains multiple polygons. Is there open source software that can do this spatial operation? My .las files are enormous,...
0
votes
0answers
247 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 ...