3
votes
2answers
304 views

What free gis is on android that leads in the area? — just name top 1-2

similar kind of q of to What are some Free and Open Source GIS Desktop packages include evidence such as 4.8-5 rating out of 5, etc.
1
vote
1answer
1k views

ArcGIS javascript api: Convert a map service with projected coords to web mercator

here I see a question about tiled map services. But what about dealing with an arcgis server map service in a projected coordinate system like say 2278, how would I convert this to web mercator so ...
1
vote
0answers
133 views

Why does IFeatureClass.Search fails with -2147215922 (FDO_E_SE_INVALID_NUM_PARTS)?

in a class extension, I'm trying to do search features inside a point feature class(part of a geometric network on an sql server sde database) and I get a -2147215922 (FDO_E_SE_INVALID_NUM_PARTS) ...
2
votes
1answer
807 views

How to find Drawn Polygon intersection with layer elements in OpenLayers

I draw polygon vectors and I can find intersection to each other: vactorTest.features[0].geometry.intersects(vactorTest.features[1].geometry) but I want to find which layer elements this polygon ...
2
votes
2answers
1k views

GeoMedia WebMap with WFS 1.1.0 Filter Examples?

I'm having problems forming a GET query for WebMap spatial data using WFS 1.1.0. My query looks like this: ...
4
votes
2answers
781 views

How to show two different labels of a particular vector layer with the help of QGIS?

I am working under a government project in Kolkata with QGIS. I want to show two different labels of a particular vector layer. just like we can show two different labels in Arc GIS with the help of ...
1
vote
1answer
225 views

hypsometric colors alà IMHOF, SYDOW or PEUCKNER

I need a hypsometric color-map to add it to my multishade-modell. (High Mountain between 800 and 4000m) There are a lot of differend typs explained in IMHOFS "Cartographic Relief Presentation". I want ...
4
votes
2answers
949 views

Is it valid to have a properties element in an geoJSON featureCollection?

Is it valid to have a properties element with a featureCollection-element as parent? This is, according to geojson.org valid: { "type": "FeatureCollection", "features": [ { "type": ...
5
votes
2answers
2k views

Layer misalignment with UK Ordnance Survey data and OpenLayers

I am in the UK and my QGIS projects are based on UK Ordnance Survey mapping data and are set up in EPSG:27700. Whenever I have tried dropping an OpenLayers layer (Google Satellite/Bing Maps Aerial) in ...
5
votes
1answer
521 views

How to open two projects at once in one QGIS window?

is it possible to have open two gis projects at once within QGIS? I want to compare the position of points between two different coordinate refercence systems. nice regards, jörn
3
votes
3answers
589 views

Which open source software to create desktop interface for Geo-processing tools?

I want to create an desktop interface to create geo-processing tool and that to using Open source GIS software. I will be using Postgresql and postgis too to save and retrieve data for operations. I ...
1
vote
1answer
185 views

Is there any open-source building squaring tool?

I have a set of detached building polygons and i can merge them together in order to form a single building polygon. However, when merged output polygon may not preserve the orthogonality of building ...
3
votes
1answer
725 views

Is it possible to change where the Database connection folder is looking at?

In my workplace, we have just upgraded to Windows 7, we have a roaming profile, so all the files that are in the Application Data folder are in a folder called "\username\redirect\Folders.." also in ...
3
votes
2answers
715 views

Spatial Definition Queries?

Is it possible to spatially pre-clip layers (say with a IPolygon object) before they are loaded into ArcMap - a bit like a query definition but spatial?? Also I need to do this for raster data? ...
3
votes
2answers
1k views

From point to Grid of polygones or polylines

Is it possible to reconstruct a grid of polygones or polylines from the centroids? I am looking for a arcGIS tool or script that will allow me to reconstruct a grid of polygons or polylines from ...
5
votes
1answer
1k views

How can i delete multiple nodes, for a polygon, with Quantum GIS?

I know how to select a single node and delete it. I can also click-drag to select MULTIPLE nodes. But if i click delete, only one node (from the higlighted list) is removed. Can I delete all the ...
1
vote
1answer
8k views

Computing Shortest Distance using Google Map v3 and Openlayers

How to compute shortest route between two points in google map that user selects and provide all routes from source to destination in Transport system?
1
vote
3answers
2k views

Compute Shortest Distance(s) between two points

I am using Mapinfo 11. I want user to be able to find shortest route between two points so that user can travel from point A to point B using these path. Any Idea how to achieve this? Edit: I need to ...
2
votes
2answers
915 views

Labeling points on ArcGIS 9.3

I just created a points Shapefile, with 300 points. Using ArcGIS 9.3. now i need to label all of them numerically, is there a way of labelling all of them, instead of me going to the attrubute table ...
3
votes
1answer
286 views

How to keep web map from displaying content from 2 zoom levels at the same time?

So I'm making a web app with a map that combines several layers (and dynamically toggles them off & on). I've made these layers in TileMill, exported them to .mbtiles files, and I'm serving them ...
4
votes
2answers
1k views

Beginner needs suggestions on map clicks and geojson

I'm a beginner with programming, and javascript. I went to the FOSS4G-NA conference and was very inspired to learn more. I'm trying to learn PostGIS, and have come across a very useful tutorial for ...
1
vote
1answer
294 views

Looking for QGIS Presentation info

I'm preparing a presentation of QGIS to release of the brazilian QGIS user guide. Thus, I would like insert some information about QGIS in global scale. Something like Tim's qgis-for-humanity ...
3
votes
1answer
2k views

ESRI File Geodatabase - Trying to use CURRENT TIME in Definition Query

Is it me, or are the date functions in the file geodatabase a total nightmare. Anyway, I am trying to set up a fairly simple definition query that contains a subquery with a date comparison. My ...
4
votes
2answers
2k views

Use Arcgis.com map package as a web map?

In Arcmap 10 there is a menu item to create a map package and upload to Arcgis Online (File > Create Map Package > upload to...). That works fairly smoothly, if a tad slow sometimes. However once ...
5
votes
1answer
500 views

GIS-based reporting and maintenance tool

Background Conceptually, I am looking for a tool, or suite of software tools that can be readily integrated to help browse data using a GIS-based map (such as Google Maps). The proposed architecture ...
1
vote
0answers
166 views

IFSAR bad stripping in some spotting areas [closed]

I have a co-worker that was working on do some analysis on IFSAR and he clips them to quads. He said that there are 6 quads that came up bad stripping. Is there a way around to clean it up the bad ...
5
votes
2answers
293 views

Raster calculation confusion

I need to do some raster calculation, I've been trying to make it work but I am not sure everything is working properly. I need to apply a formula, but I am unsure if I am doing it properly. The ...
2
votes
2answers
533 views

Looking for python/VB script to insert a new uniqe field

Is there any phyton/VB script which will add a field to shapefile which will be corresponding to first three characters from the shapefile name ? I am working in modelbuilder and arcgis 10. Thanks ...
3
votes
1answer
156 views

Can I customize a Google Maps layer in terms of content?

I don't want all features that come with the Google street layer. I just want basic infrastructure like roads, national parks, cities, streets with their names, etc. Everything that is public is OK. I ...
3
votes
1answer
3k views

Exporting .jpg files from data driven pages in Arcmap

I have generated about 90 maps through data driven pages(ArcGIS 10.0). I now want to export them as .jpg files in either landscape or portrait format. I tried python but it is not working, it worked ...
4
votes
3answers
269 views

Where can I find a data model for land use?

Does anyone know where I can find a data model for land use? I know about data models available on Esri Support site. Are there any other resources? Thank you in advance.
1
vote
1answer
813 views

Exported ArcMap crashes ArcPad 10

I'm a computer scientist, and not really familiar with all the terms related to GIS, please forgive me. I have been given an ArcMap project that consists, what I believe are raster layers, aligned ...
2
votes
1answer
1k views

Is it possible to integrate a route planner into QGIS?

I am looking for an open source GIS and now asking myself if it is possible to integrate a route planner into QGIS. The route planner should be able to calculate the distance from one position in the ...
17
votes
2answers
676 views

Hand drawn sketchy symbology styles for GIS software

Often times in planning projects, a hand drawn, sketchy look is desirable in order to convey the preliminary nature of a project. Is anyone aware of any utilities/plugins for desktop GIS software ...
2
votes
2answers
385 views

How to shift the Map a little bit?

I'm having trouble with two maps, both UTM33N/WGS84. They should be exactly on top of each other but there is a slight shift between them of probably a few hundred meters or so. I Tried to adjust ...
1
vote
1answer
494 views

Markers not displayed in xhtml in OpenLayers

I just started working with OpenLayers because I want to include a map on my JSF page (.xhtml files). I want to use the same feature that is demonstrated in this example: ...
2
votes
2answers
5k views

Minimum system requirements for ArcGIS on Mac

Just looking to buy a new-ish computer for study for my PhD. I will be using ArcGIS. I know the ideally it would be best to buy all the memory and ram I can afford but I am self-funding on a low ...
16
votes
4answers
4k views

Which remote sensing satellite is best used for vegetation extent mapping

I'm currently writing an assignment for my remote sensing class and while I think I have correct answer was wondering what people who do this stuff for a living think. The question is: which ...
0
votes
1answer
552 views

Changes made using wfs-t and GeoExt don't get saved to PostGIS

I'm using GeoExt to display and edit a vector layer from GeoServer (running with Apache Tomcat) but if I modify the shape of an existing polygon (or create a new one but I'm trying not to leap ahead ...
1
vote
2answers
1k views

Import and Plot MS Excel file in ArcGIS (v9.3) ModelBuilder

I am trying to create a tool using ArcGIS ModelBuilder (v9.3) that will allow me to import an Excel file, and output it as a shapefile in a coordinate system of my choice - or, if choosing the CRS is ...
2
votes
5answers
2k views

Where to find qgsaffine in the menu?

I installed the plugin qgsaffine but cannot find the entry in the menu bar. Where do I find this. Can anyone here help me with this? best regards desputin
1
vote
0answers
141 views

identify the fraction of raster cells and listing all the cell values in every polygon

In Arcgis 10 I have a netcdf file that maps the fractions of cropland in the world from 1700 to 2007. I extracted the years that i needed as raster layer format (continous data from 0 to 1) and now, ...
7
votes
3answers
6k views

How to access QGIS Plugin Repositories from behind a proxy?

I have been trying to teach myself QGIS by using this forum and others to help. Most of my questions can be answered by downloading plugins that are available through 3rd party repositories but for ...
5
votes
2answers
3k views

Viewsheds and Observer Points in ArcGIS Spatial analyst

I am trying to understand the viewshed and observer points tool in spatial analyst. I want to show which areas of land can see a wind turbine, or put another way, from where can the wind turbine be ...
1
vote
1answer
1k views

Calculate the distance between two contours

I have two contour polylines (single shapefile) and I would like to calculate the mean, min and max distances between the two lines. Is there a function in ArcMap 10 (ArcInfo license, incl. Spatial ...
3
votes
1answer
183 views

How to unload() a plugin in QGIS 1.7?

I am writing a python plugin for QGIS 1.7 (started it on QGIS 1.6 but switched to 1.7 recently). Since I switched to 1.7 my unload function doesn't seem to be working anymore. Whenever I implemented ...
3
votes
0answers
294 views

How to get distinct values from multiple columns in GeoTools?

Is there a way to get distinct values from multiple columns in geotools? I know I can get unique values from a column like this: SimpleFeatureSource featureSource = ...
4
votes
2answers
5k views

Which hardware configuration is necessary for QGIS?

What kind of hardware is necessary to run QGIS on Win XP? Closely related: Specifications for GIS desktop hardware
9
votes
2answers
2k views

Shapefile to SVG with ArcMap (while retaining country attributes)

Does anybody know how to export the Natural Earth 1:110m shapefile to SVG with ArcMap while retaining the country attributes? From SVG I'm gonna try to convert it again over to RaphaelJS to achieve ...
2
votes
4answers
538 views

Floating point: understanding their inaccuracy [closed]

I am trying to understand why a floating point is inaccurate. Please bear in mind that I am not a mathematician. What is exactly the difference between floating point and double integers? and why use ...

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