A term widely used to describe the combination of spatial software and analytical methods with terrestrial or geographic datasets

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20 views

A Geospatial Cloud Platform list of services offered [on hold]

What would be a set of basic "core" services needed if you wanted to provide a Geospatial Cloud Platform to solve any geospatial problem set (for geo-community, academia, government, public etc…) An ...
0
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1answer
41 views

Scaling x,y coordinates in proj4

This question was asked before, but without answer. Let's say we have mercator map with given resolution (for simplicity in centimeters). Now let's get coordinates of (lat,lon) = (50, 15): $ proj ...
1
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3answers
58 views

Sending and receiving gis data to map

I have a spatial database in Sql server and I am working in asp.net mvc. My project must show stored shape in web page that uses openlayers js and user must see and edit shapes and send the result to ...
0
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1answer
123 views

GDAL WMS Question

I'm new to GDAL and am currently trying to hit a WMS using gdal. I need a way to save the image to my desktop. I currently have an xml file with the WMS description syntax that gdal wants -> ...
6
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4answers
230 views

How to clip 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, ...
7
votes
2answers
140 views

How to check if points are within a circular sector using PostGIS?

I want to get the stars within the black region as shown above. To find this I have the centre of circle (lat, long), radius and the angle of region (45 degree). I am new to postgres. I worked on ...
1
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0answers
19 views

Similar paths to Compare [duplicate]

I want to implement a mechanism to compare similar / identical paths. For example, a person who makes the trip home - work every day, be able to detect these paths and create groups to compare ...
1
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1answer
65 views

How to get screen coordinate from geographic one?

I need to know, how can I convert some geographic coordinates to the screen one. I want to remind you about desktop coordinates system, how it look like: I've developed soft, which is loading map ...
4
votes
2answers
126 views

geospatial libraries like postgis

I'm pretty comfortable with postgis, but I realized that for part of my application, having a database is pretty heavy. I'd like to be able to take a stream of Point objects and check against an in ...
1
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0answers
84 views

GeoDjango with MongoDB

Has anyone had experience successfully deploying GeoDjango with MongoDB? Is it possible? If so, how is it as simple as as installing the non-relational fork of Django and setting MongoDB as the ...
2
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0answers
74 views

Create image (TIFF/PNG) from geodetic (lat/long) data

Using Java, I need to render a bunch of geodetic data to an image, ideally TIFF or PNG. Specifically this is weather data, with each sample having a latitude, longitude, and amplitude value. I'd like ...
0
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2answers
39 views

ShapeFile with Z Co-ordinates

I have 3 shapefiles, two of them wihtout the Z Co-ordinates elevation but 1 of them has a Z co-ordinate elevation. I can load two ShapeFiles into my SQL Server Database which does not have Z ...
3
votes
1answer
106 views

Given a Lat and Lon, identify if the point is over land or ocean?

In R, what is the quickest way to identify if a point is over land or ocean? e.g. for: set.seed(0) lat <- runif(10, -80, 80) lon <- runif(10, -180, 180) points <- expand.grid(lat, lon) ...
2
votes
3answers
148 views

Best Approach to display charts on a web map?

I have a very basic understanding of GIS through some basic work with openlayers in Drupal CMS. I am trying to understand what is the best approach to display a chart on a map (like the one below)? I ...
0
votes
0answers
46 views

Issue in Configuring Map Server Demo App

I am trying to use map server to display an indoor map of a building in a android application which i am about to develop. I setup the map server according to it's tutorial. I configured the files in ...
0
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0answers
167 views

Geoserver WMS animator to animate layers along with its data(e.g time)

i am going to create animated map by the use of geoserver WMS animator in which the animation parameters like "APARAM" takes the value 'layers' and "AVALUE" takes the layer name in the geoserver(aprox ...
2
votes
1answer
247 views

How to interpolate GPS data correctly?

I'm working on a project that involves using linear interpolation to fit lines to lat/lng points. I'm pretty new at scientific programming related stuff, and I was wondering if people could steer me ...
2
votes
1answer
451 views

How to calculate the size a bounding box?

What formula could I use to calculate the size in Kilometres of a bounding box based on a given Southwest latitude/longitude and a Northeast latitude/longitude points? The bounding box format is ...
14
votes
3answers
301 views

When did the word “geospatial” first come into usage?

For historical reasons, I'm trying to figure out when the term "geospatial" came into use? The earliest usages I can find are from around 1994, but I would be really surprised if it wasn't used ...
2
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0answers
213 views

Geospatial Tools for SketchUp

I was wondering if anyone knows of geospatial tools that work in SketchUp? I know if GeoSketch, which allows a user to import ortho imagery, DEMs, shapefiles and GPS enabled photographs into SketchUp ...
2
votes
1answer
199 views

Convex Quadrilateral Polygons subdivision in equal parts using Python / OGR

Consider an irregular polygon (P) which has four vertices. I would like to subdivide P into smaller polygons as shown here http://i.stack.imgur.com/4SKhB.jpg In the old days I was using ArcGIS 9.3 ...
1
vote
2answers
261 views

Function for Selecting Points in a Polygon

I've been banging on this for a few hours, but since I'm relatively new to PostgreSQL and PostGIS, I can't find the solution. I'm trying to create a stored procedure (function) which will return all ...
1
vote
1answer
483 views

Produce raster map using universal kriging as interpolation method

I want to do kriging with external drift(universal kriging) in R. The covariate I use is in WGS84 refrence system. Because of nature of kriging which calculates distance in planar surface I have to do ...
-1
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2answers
179 views

Open Geospatial Consortium (OGC) standards

I was trying to understand about the OGC and OGC Standards but i got confused that are they provide standards like ieee or they provide standards that should be implemented with your application i am ...
6
votes
3answers
129 views

How to cite Geospatial Data that has been edited?

I used data from the Ordnance Survey for some maps I created. License information for the Ordnance Survey says to cite OS data like this: Contains Ordnance Survey data © Crown copyright and database ...
9
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2answers
159 views

How do I detect traffic incidents in a set of geospatial gps traces?

I have a large database of gps traces (long, lat, timestamp) and would like to see if I can detect when congestion occurs on roads from that data. Any idea's or pointers on good algorithms to use? ...
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0answers
79 views

Calculating tiles extents using some level data

I have some data looking like this: <?xml version="1.0" encoding="utf-8"?> <levels> <level nr="0" tileWidth="512" tileHeight="512" envSizeX="5000" envSizeY="5000" minX="465000" ...
1
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2answers
240 views

What are some good examples of geospatial UI's

I am interested in understanding and applying practical geo-spatial examples for some of the transportation data that I have. I have several geocodes that I will pull from the database, and display in ...
7
votes
4answers
1k views

Presenting geospatial data in Powerpoint

I am looking for a more elegant way to display geospatial data in Powerpoint. KMLs seem to be becoming the norm for quickly showing interactive geospatial data to colleagues and the general public. ...
0
votes
1answer
275 views

How to get points in bounding box by degrees for map

I have some concerns about working of BOX3D PostGIS function. I tried to find places in square -158.721365889063 66.09275164148659, 154.608712235937 52.56807548751039(degrees). But this where ...
3
votes
1answer
269 views

Shape looks like big Square in SQL Server 2008

I was provided with a polygon defined in WKT which has 4741 points and am able to insert it as a geography data type within a database in SQL Server 2008. However, when I view it using the spatial ...
2
votes
2answers
405 views

What's a good way store borehole data in SQLite / SpatiaLite?

I have a bunch of bores / wells with downhole data. The 'header' info for each borehole can easily go into a single table, but I'm wondering how best to store the downhole log data. Typically they are ...
1
vote
2answers
792 views

Openlayers Vector Layer Polygons not displaying properly with OSM

So I have an Openlayers map displaying Acetate tiles in OSM, and I'm drawing polygon regions on a vector layer to represent the countries of the world. This works fine for the most part, however, ...
10
votes
4answers
16k views

How to add a simple WFS layer from GeoServer to OpenLayers map?

I'm trying to add one of the included datasets with GeoServer to an OpenLayers map. I've followed the OpenGeo tutorials, seen similar thread on here, but I can't seem to crack it. Can somebody take a ...
4
votes
3answers
3k views

How do I determine the center point of several features in OpenLayers?

I have several polygons being drawn on a map, usually representing a country or province or state. Depending on some chosen data, different regions may be selected, so what I was hoping is that ...
2
votes
4answers
1k views

How can I transform some KML data to Sql Server 2008 using FME?

I've just downloaded FME 14 day trial. I'm trying to see how easy/hard it is to transform some KML data (a simple neighbourhood shape) into my Sql Server 2008 database using FME. I sorta don't even ...
6
votes
4answers
1k views

Point in polygon algorithm for multiple polygons

I've a Google map with bunch of polygons on it. Here is a problem I'm interested in: Given a lat,lng point, what's the best way to determine all the polygons that this point lies in? The obvious way ...
7
votes
3answers
919 views

Are large companies successfully using SQL Server GeoSpatial functionality?

I am working on a project where I have to allow users to find things that are near by. In the past I have just manually stored lat/longs and done my own calculations but I'm curious if it's worth ...
4
votes
1answer
2k views

Why is my PostGIS query not using a spatial index?

I am having an issue with a spatial query that is not making use of indexes. My schema is: CREATE TABLE geoplanet_place ( woeid integer NOT NULL, "name" character varying(300) NOT NULL, ...
6
votes
1answer
191 views

Predict user's future location - location awareness mobile computing

This question is a part of an online course (Mobility Data Management) that I am currently auditing. A part of the project is to implement a system that can predict user's future location. This kind ...
4
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0answers
1k views

Examples of GIS Visualisation [closed]

Examples of GIS Visualisation [This is a community wiki post, you are inviting other members of the community to edit it - not just to correct spelling or improve formatting] Example: Dr. John Snow ...
18
votes
2answers
374 views

How does Watson solve Geography problems?

In spite of losing to humans on the geography question, Watson still won Jeopardy. The explanations regarding this incorrect answer seem a bit lame to me (at 3:40 in the video). With a logo like ...