0
votes
0answers
6 views

Select Single Feature

I'm making a plugin in quantum gis 1.8 Lisbon. And I intend to select the value of fields in a table, when I click the mouse over a point. (Ie something similar to Single Feature Select tool). Does ...
0
votes
1answer
4 views

QgsFeatureList features as QStrings

I am catching the selectionChanged signal and passing the selected layer to the registered method. Once here, I want to know the features that were selected. I do this with a call to ...
0
votes
0answers
9 views

how to calculate annual count of a day when daily min temperature is less then zero degree celcius of a GRD file in python?

Minimum temperature of a year is given in GRD file and i have to read that file and then calculate the frost day from it in python.
0
votes
0answers
20 views

Syntax error using Con() arcpy [on hold]

I keep getting a non specific syntax error when writing some map algebra using the Con() in python, "There's an error in your program: invalid syntax".. outCon1 = con(((ten == 1) | (fourteen == 1) | ...
0
votes
1answer
11 views

What is relation- difference and/or similarities between PPP, SBAS, GNSS, RKT?

Recently i came across lot of terms such as IGS, GNSS, GPS,PPP, WAAS, EGNOS, GLONASS, CORS and many more ... I know some of them I can group them such as GPS, GLONASS, GALILEO . And then there is SBAS ...
3
votes
0answers
22 views

How to do Manhattan Voronoi on QGIS?

I've spending last two weeks trying to discover how to do a Manhattan Voronoi on QGIS. Can someone point me to the right direction. In the link bellow you can find a sample of the information I've ...
0
votes
1answer
20 views

Geodjango read raster files

I am developing a web app in geodjango (django) framework but I need to import raster files. Is it possible a geodjango app read raster files from a directory? Thanks
0
votes
2answers
16 views

Saving in arc ascii grid format

This might be a really simple question but I can't figure it out! I need to save a DEM in Arc ascii grid format so that I can load it in to Matlab. If I explain a bit about what I am doing maybe it ...
2
votes
2answers
11 views

QGIS Mosaicing with null values in images

I have a set of landuse landcover data which needs to be mosaiced. Whenever i try using QGIS Raster>miscellenous>merge tool. giving no datavalue as '0', it returns either (A) ' Traceback (most ...
0
votes
0answers
7 views

Problem with adding placemark from kml file with specific id

I have a problem with adding a vector layer from kml file. I am trying to make XMLHttpRequest and add only a placemark with specific id. Nothing is displaying on the map. Request is successful and ...
0
votes
0answers
9 views

Problems installing r.roughness

I am trying to install r.roughness in GRASS 6.4.3. It starts compiling but at the end I get this error: ERROR: Module did not install properly I cannot identify the problem. Can somebody that has ...
0
votes
0answers
16 views

C++ and Quantum GIS

I wish to develop/customize with a combination of C++ and Q GIS (Windows OS). I downloaded QGIS but couldn't find header (.h) and library (.lib) files. Where can I find them?
3
votes
1answer
46 views

Is there free GIS reader that supports transparency of JPEG layers? [on hold]

I need to make from my ArcMap layers (which are georeferenced JPEG files) a file that can work on a free and easy to use program. The program needs to be able to open multiple layers so we can put ...
1
vote
1answer
14 views

How to limit Create Fishnet extent by mask & carry over attributes?

I have a 5km polygon grid of an area which is not a standard square/rectangle, it is in fact a rough ovoid made up of around 500 5km2 cells. What I want to do, eventually, is have a 100m polygon ...
0
votes
0answers
4 views

TileStache:TileStache.Core.KnownUnknown: Couldn't get a layer from data source!

I want to use tilestache to get geojson files. I hava run tilestache-server.py -c tilestache.cfg ,and it works well. However,I want to get tiles from data stored in postgis. Maybe it will need to run ...
0
votes
0answers
15 views

Why are map tiles being repeated? Using MapServer and Openlayers

Problem I have: map tiles from my layer are being repeated. Shapefile is projection 3059. I have specified 3059 is in the mapfile and also when creating map object. I know OpenLayers.Layer.WMS is ...
-1
votes
1answer
24 views

GeoTIFF files of 3B42 [on hold]

I want to download GeoTIFF files of 3B42 from ftp://trmmopen.gsfc.nasa.gov/trmmdata/GIS but that needs username and password. How can I get them?
0
votes
1answer
13 views

How to install MapServer on IIS 7.5 with windows 7 OS

I want to use the map server in my asp.net application. For that one, I need to install mapserver on IIS. I am using windows 7 with 64 bit os. I have IIS 7.5 installed on my PC. Can any one help me ...
0
votes
0answers
8 views

Openlayers WFS change featureType

I am trying to change wfs featuretype "on the fly" in openlayers. (This method http://dev.openlayers.org/docs/files/OpenLayers/Protocol/WFS/v1-js.html#OpenLayers.Protocol.WFS.v1.setFeatureType) This ...
0
votes
1answer
29 views

converting coordinates from unusual DMS format to decimal

So I've been shared a dataset with what to me is an unusual format for degree min second data. In their own words: The coordinates provided are longitude and latitude in degrees minutes and ...
1
vote
0answers
12 views

Programmatically modify layer datasource on project save event (QGIS)

I have a QGIS plugin which allows users to add WFS/WMS layers to the map. I would like to be able to scramble the user ID part (token) of the uri when the project is saved/closed and then use my own ...
0
votes
0answers
3 views

adress tag: applying them in the right way

i wanted to run a osmconvert & filter with the following goal - to get the following tags out of the datas: addr:street addr:housenumber addr:city so i decided to do the following command ...
1
vote
2answers
53 views

How does one export the list of stored WMS-servers in QGis?

Could anyone point me as to where QGis stores the list of WMS-servers you added? I have built a fairly large list of WMS-server on one computer, but the QGis-project file which gets accessed by my ...
1
vote
0answers
15 views

Alternative satellite and hybrid layers for Europe published on WMS

For an application I am building I require to show satellite (high resolution) and street view layers, preferably also a hybrid view. Unfortunately, due to the application not running on a typical ...
0
votes
0answers
18 views

QGIS custom form and autocompleted data entering with “validation check”

In Qt-Designer I created a custom form where I can choose serveral species names in two different combo boxes. This combo boxes are linked via "value relation" to the accordant non spatial tables ...
0
votes
2answers
33 views

Gis Exam Books and Exam Study Material [on hold]

Do any one have books or study material for ARC GIS Desktop Associate , i can also buy used books .
2
votes
0answers
10 views

How to use %value% (from For iterator) in SQL expression of Calculate Field in ModelBuilder?

I have a shapefile with data of fish specimens and the coordinates where they were tagged for research purposes. One of the fields in the attribute table of these shapefiles is the fish length in ...
0
votes
0answers
14 views

Digital Elevation Model Fusion

I want to fuse Digital elevation Models extracted from Carto-1 satellite. I already extracted DEMs & tried few algorithms in Matlab. Unfortunately as they are not Georeferenced i am not getting ...
0
votes
0answers
7 views

Merge long/lat points within a bounding box depending on a radius in MySQL

Here is a pic of what I basically want to achieve: http://i.stack.imgur.com/gjbfa.png So as the title says, I want to merge long/lat points which they're radius (of 25Kms for example) touch inside a ...
0
votes
1answer
22 views

Can I display selected features in table on map using python [duplicate]

I am thinking to use arcpy to select by attribute, after that I want to display the selected features attribute in a table on the map, how can I make it? Thanks in advance.
0
votes
0answers
12 views

Is it possible to import all the selected value of subd label to symbology? [on hold]

Based on This thread I Select the value of each subd, Now I have custom selected value labels. No | subd | village 1 | town1 | v1 2 | town1 | v2 3 | town1 | v3 4 | town2 | v4 5 | town2 | ...
1
vote
0answers
20 views

Is there ArcGIS (ideally) solution for spill modeling from particular pour point on crude oil pipeline?

wondering if anyone knows of a solution for spill modeling from a particular pour point on a crude oil pipeline? I currently have all my data within ArcGIS (DEM, major/moderate/minor watercourses, ...
1
vote
0answers
21 views

length and width of polygon

how can i find polygon's length and width in Qgis(regular polygon and irregular polygon)? i have area and perimeter but possible to have length and width ?.
0
votes
0answers
9 views

argument 1 has unexpected type error when parse xml with ElementTree

I try to make plugin in QGIS Dufour to open and read xml metadata and then to show some information in metadata i try to parse it with ElementTree and then show it in QLineEdit, this code i use to ...
0
votes
1answer
20 views

How to create coastline in Arcgis 10.2

I want to generate the shortest distance to coastlines from interested points worldwide. My question is given existing world map polygon file, what the standard way to create coastlines is. Thanks ...
-2
votes
1answer
33 views

How to Label Field With Multiple Selected Values?

I have a shape named "Subdistrict" and it shown on Attribut Table like this : No | subd | village 1 | town1 | v1 2 | town1 | v2 3 | town1 | v3 4 | town2 | v4 5 | town2 | v5 6 | town2 | ...
0
votes
0answers
12 views

How to cache write Google Maps in OpenLayers?

How can I cache write Google Maps in OpenLayers? Cache writing function of OpenLayers works with other maps but I have difficulty implementing it with Google Maps?
1
vote
2answers
30 views

Find closest feature

How can I find the closest feature(coordinates) in a json file from a set lat lon using openlayers. Currently, I get the centroid point(lat,lon) from the selected polygon feature ok, but I Would also ...
0
votes
0answers
8 views

GeoExt2 projection problem with OSM and googlemaps

First of all, I already see the topic in Difficulty to display WMS and Googlemaps layers using Geoext and ext but I'm still not able to find an answer. I'm using the example in ...
0
votes
0answers
9 views

Transfer begin and end mileposts values from points on to a route

I have been trying to perform the segmentation of Road Network based on mile markers. I do have begin and end mile posts for route segments but they are county cumulative mile posts i.e. one segment ...
3
votes
1answer
33 views

How to store Python Add-In menu customization/configuration in *.esriaddin file?

There is a gap in my understanding of Python Add-Ins. When I create a Python Add-In it is easy to see where buttons, tools and extensions are implemented as Classes in the *_addin.py script of the ...
0
votes
0answers
7 views

rendering tiles from mapnik xml with scale_factor option command line

I'm using tilestache and mapnik to render tilesets and am trying to figure out how to render my various mapnik xml mapfiles at 2x scale for high-density displays (retina). As far as I can tell, there ...
1
vote
0answers
32 views

How to Buffer with Dissolve ALL on very large polyline dataset? [duplicate]

So I have a fairly large polyline network covering a decent chunk of North America, containing just shy of 900,000 table records. I want to do some very simple "GIS 101" kind of processing to it -- I ...
0
votes
1answer
17 views

Choropleth map turns one color when filtered, sql error

My data is generating a choropleth map perfectly but when I try to filter (both in the filter tab and by writing my own SQL) it turns all one color and tells me I have an SQL error. This happens even ...
2
votes
1answer
18 views

How to use ArcGIS Data Interoperability tool in ArcPy?

I created an ArcGIS Interoperability Tool, which I like to use in my ArcPY script. In order to find the correct code I created an ArcGIS Toolbox Model including my Interoperability Tool, and exported ...
1
vote
1answer
13 views

Openlayers active select control on layer prevents drag and zoom

I've build this web-map http://gimoya.bplaced.net/Openlayers/Trails/map.html with bike-trails (retrieved from a KML on my webserver), where several trails from a region are covered by a selectable ...
0
votes
1answer
14 views

How to EASILY add a map legend to a map in Geoserver?

I'm new to Geoserver and Neatline and somewhat to HTML coding! But, I am clueless as how to 'EASILY & Cheaply " include a simple legend on a map using a WMS statement. I have been able to use ...
1
vote
2answers
15 views

How to load multiple types (formats) of dynamic readers into one FME workspace?

This is a follow up to this question: I am trying to find the a workflow that will define dynamic schema readers from a blank workspace - that is to say, without using the "Generate work space" ...
0
votes
2answers
17 views

Keep leading zeros when converting .txt into dbf using CopyRows management

I am writing a python code in order to bring my.txt file into a dbf file in arcgis. I am using CopyRows_management which seemed to be working just fine until I realized that one of the 40 fields from ...
2
votes
0answers
18 views

ArcGIS10.2 crash opening python window

I was trying to test the data management commends in python, yet arcgis crash every time I I try to open to python window. According this post, it is the python version issue. I do have other versions ...

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