1
vote
1answer
63 views

Rf-Classification seems to work but gives an error 15 seconds later

This is my code. It classifies an imagery-stack(xvars) and reads a shapefile with training-points. If I run single rows they work. Even if I run them all, they work and start to predict but after 15s ...
1
vote
1answer
8 views

Tiled raster image to be placed in an OSM/ Leaflet.js map

I have a mapoverlay in a custom projection which I need to add as a layer to an open street map map within a website. Since I was not able to change the projection earlier, I decided to manipulate the ...
1
vote
1answer
4 views

*Leaflet* mouse wheel zoom only after click on map

I'm working with the Leaflet JavaScript Library and attached a (working) map to my HTML Document. It is in the middle of the page, and when I'm scrolling down with my mouse wheel and arrive at the ...
1
vote
0answers
4 views

How to create Strips with GCP point distribution for raw Geoaye satellite imagery?

I have raw Geoeye satellite imagery, I just want some guidelines for creating a strip map with GCP distribution. We need to make orthorectification for raw Geoaye satellite imagery, I think it's ...
1
vote
2answers
37 views

QGIS 2.4 plugin PyQT qWebview javascript interface problem

I have a QGIS plugin which contains a qtwebview and javascript communication between the page and the plugin. It is working perfectly with QGIS 2.2 but not with 2.4 ( both QGIS version share the ...
2
votes
1answer
37 views

What is an efficient Algorithm to draw a straight line from points?

I have some cross section survey data, which is like this: X Y Z pt_dt 2970969.635 359725.0088 83.4242 1-x 2970968.278 359722.2182 83.2591 1-x 2970941.771 359670.127 83.0655 1-x 2970961.369 ...
4
votes
1answer
1k views

Union, Dissolve, Buffer — multiple layers, all in one step?

I'm a new user of Quantum GIS (1.7.3) and I need to repeat a task multiple times, so I'm wondering if there is a quicker way to do the following (with three or more polygon layers - each layer has a ...
2
votes
2answers
18 views

Layer just for annotations

Im relatively new to QGIS and would like to know whether or not I can save my form annotations to a layer so I can turn them on or off.
3
votes
1answer
238 views

Query task issue with Arabic input

I am using ArcGIS Java Script API version 2.8 & using query layer in ArcGIS server. The data is coming from sql server and most of the data is in Arabic. I am sorting the data according to the ...
0
votes
0answers
4 views

How to hit Network Analyst for OD Cost Matrix with different Origins & Destinations by SOAP Request

I am trying to get (solve) OD Cost Matrix from arcgis sampleserver with my own sets of Origins and destinations points. The problems is, I don't know how to use SOAP Web Service to solve OD Cost ...
1
vote
1answer
19 views

Query to find all lines connected to other

I have problem with one spatial (Oracle) query. Simplified overview of the problem is: I have two tables: CREATE TABLE thin_lines ( id NUMBER PRIMARY KEY, geom SDO_GEOMETRY), color ...
0
votes
1answer
8 views

Processing RGB+NIR raster into RBG?

I have a Geoeye 1 satellite photo that's a 4-band multispectral B,G,R,NIR, 11 bit raster. Ultimately I want to publish this raster as a web service (using Mapserver). I opened up the raster in Qgis ...
0
votes
1answer
8 views

Disable GWC cache emptying after style changes

GWC is removing all generated tiles for layer after any edit of this layers style. Is there any possibility to turn off this feature? I've got few changes to make on working published geoserver so ...
1
vote
1answer
12 views

How to extend grid lines (Survey traverse lines) created by vector grid tool in QGIS?

We have a polygon. We want to create a grid (sort of) with certain intervals, lets just say - 200ms. In QGIS, using "Vector grid" option we can do this. But, once it's get clipped, it's like Fig -1. ...
1
vote
2answers
22 views

MrSid layer not showing up using GeoServer 2.5.2

I am using GeoServer 2.5.2 on windows. It is running as a service. I followed all the steps to add the MrSID support to geoserver. Now I have the option to select MrSID Raster Data Source. I select ...
3
votes
2answers
209 views

How to draw circle of 3 km radius in ArcGIS for ESRI?

I am able to draw the circle but I want a circle of radius 3 kms I have checked all the previous posts. I want to know what is the units of radius in the below code. var radius, circle, ring, pts, ...
0
votes
0answers
5 views

Road displays up to node, not up to starting point and ending point

SELECT id FROM table ORDER BY st_distance(the_geom, st_setsrid(st_makepoint($slng,$slat), 4326)) limit 1 ; get source and similar for target ; and then apply in dijkstra algo SELECT pgr_a('SELECT id ...
1
vote
0answers
6 views

OpenLayers.Renderer.Symbols custom named by function

Is there any approach to define custom OpenLayers.Renderer.symbol by a function? For example, instead of making a symbol for each 3-pointed, 4-pointed, 5-pointed etc. star ...
1
vote
0answers
6 views

Start session edit on a specific layer on the map?

I created a GIS using ArcObjects, my application needs to be connected with a geodatabase stored in SQL Server. I used ARCSDE to connect my application to the database and when the database is ...
2
votes
0answers
6 views

Processing for large scale networking animation?

I am looking to create an animation of network connections, something very similar to this: http://vimeo.com/16897839. Let's say I have a huge database (millions of rows), that includes source ...
1
vote
0answers
26 views

How to extract elevation data from ASTER/SRTM?

I just want to know if there are any other tools available in QGIS apart from the Point Sampling tool to extract elevation data from ASTER/SRTM/CartoDEM (for India) data? When I convert these images ...
0
votes
1answer
101 views

WMS render geotiff as a small image

Hye! I am facing Strange problem,My Geoserver 2.2.4 was stop working suddenly so i made a backup of Dir folder and install Geoserver 2.3.5 and replaced workspace folder with new one. Now all ...
1
vote
0answers
14 views

Display Arabic text in ArcGIS

I have my GDB where names for a few fields in feature class is written in Arabic. When I label them, it is displaying the labels but unable to understand the text as it is symbolized/coded. Can ...
1
vote
0answers
18 views

Count trees with SAGA GIS?

I have a problem when I try to input A as dsm and b as dem. I followed the steps in this blog http://dominoc925.blogspot.com/2012/02/simple-method-to-count-trees-using-saga.html In grid difference > ...
3
votes
1answer
2k views

How do you put GeoJSON attribute information in a popup with OpenLayers

I am having some trouble putting GeoJSON attribute information in a pop-up. The selection control is working, and I create an alert (for testing) and this is working. But I can't figure out how you ...
1
vote
0answers
4 views

One to Many relation in arcgis

I'm working on arcMap, and I have a relation one to many between building column and the residents in the building. The attribute table for the building have these columns: id,label,number. I have an ...
2
votes
0answers
18 views

Any solution to mosaic Modis MOD13Q1 using batch file?

I have a Modis MOD13Q1 product for Pakistan, four tiles cover my complete area and I have data consisting of 14 years, after every 16-day interval. I want to mosaic them using a batch file which ...
3
votes
1answer
10 views

QGIS 2.2: prevent labels being cut off / clipped at edge of map

I've read a few other issues about trying to prevent labels from rendering if they run off the edge of the map canvas. This is particularly a problem in Composer, where I get lots of country labels ...
0
votes
0answers
27 views

Cause of ExecuteError: ERROR 999999: Error executing function from Spatial Join?

I'm trying to use the spatial join to append rows to my target feature from my join feature. Here's my code: #import the module import arcpy from arcpy.sa import * from arcpy import env ...
1
vote
0answers
23 views

FWTools Python ImportError: DLL load failed:parameter is incorrect

Please, can anyone help me solve this issue? Please find the attached snapshot for your reference. I am working on a Windows 7 Professional, Service Pack 1, 32-bit laptop.
1
vote
0answers
29 views

Cause of Error 000308: Invalid Field Type when batch running ArcPy script?

This is my first post on this site. I am using ArcGIS 10.2 for Desktop. I wrote a simple script in the form of a python toolbox to calculate the speed of travel between consecutive entries of a ...
1
vote
0answers
4 views

QGIS 2.4: make an image-to-image registration to link the 2 images (RGB AND NIR)

I have 2 images (RGB and NIR) in png form from field and i need to link them together somehow to be able to see the overlapping areas, and cut out the wrong ones. How to do this with QGIS 2.4.0
1
vote
1answer
32 views

UnicodeDecodeError: While installing gdal in a new Python Virtual Environment

I was trying to create a Python Virtual Environment for some initial GIS development. I installed pip and virtualenv and then tried the following commands from the Linux-Terminal to accomplish the ...
0
votes
0answers
4 views

Spatial Join in Arcpy - wrong line segments are being matched

I'm working on an analysis in which I want to compare 2 polyline-datasets. In one of the first steps, I use a spatial join to create a sub-dataset with only those line segments that have an exact ...
1
vote
1answer
120 views

How to dispatch events from javascript

I am trying todispatch events from external javascript to open tooltips or infowindows from feature points. What I am doing using google maps api is something like this: function myClick(id){ ...
1
vote
0answers
39 views

Copy Features giving ERROR 000210: Cannot create output in ArcPy?

I have an issue where I'm trying to save separate feature classes for each route in an already solved closest facility problem, and one seemingly arbitrary route won't save. I tried to look at the ...
1
vote
1answer
17 views

Restricting ArcGIS network analysis to finding origins/destinations with common ID?

I have two point feature classes, patients and physicians. The patient feature class has a record of which physician each patient visits (a one to one relationship). I would like to run an OD Cost ...
2
votes
1answer
31 views

MapBasic sentence to update column contained in an object table

I was looking for a MapBasic sentence to update a MapInfo table. I've got two tables and I want to update one of them (POINTS) with an attribute of another (REGIONS). I would like to update points ...
2
votes
2answers
50 views

How we can get output for os.system() in python?

I wrote the following command in Geoserver rest-api using curl: cmd=curl -v -u admin:geoserver -XGET -H "Accept: text/xml" ...
4
votes
1answer
53 views

QGIS Processing Progress

I have been developing a python plugin that uses Processing algorithm for raster calculations. I want to support the gui with progress bar. How can i connect Processing job to progress bar? I found ...
2
votes
0answers
39 views

Converting KML To Layer using ArcPy losing objects?

I am trying to a convert kml file to a layer using python. This is my code: import arcpy arcpy.KMLToLayer_conversion('C:\kml\\result.kml', 'C:\kml', 'result') But the layer has lost a lot of ...
1
vote
1answer
113 views

Using unicode characters (arabic) in Select By Attribute of ArcGIS for Desktop?

I'm new to Python scripting with ArcGIS for Desktop and I have unicode characters (arabic) in my attribute table. I want to use these characters in my script but when I try to do that the script ...
0
votes
1answer
83 views

How to update/delete data from a datagridview?

I wanna be able to update/delete data from a datagridview, and when I do that of course the data in my PostgreSQL database should be edited too. So I've thought about giving the user the ability to ...
4
votes
2answers
4k views

Resolving ImportError: No module named arcgisscripting?

I am trying to run an ArcGIS python script from Eclipse and get the following message: ImportError: No module named arcgisscripting I can run this in IDLE... any ideas?
1
vote
0answers
10 views

How can I associate a consistent polygon area with a set of attributes using a topology?

Consider the following topology. SELECT CreateTopology('topotestschema', 0, 0.01); CREATE TABLE pregen.topotest (id SERIAL PRIMARY KEY, data TEXT); SELECT AddTopoGeometryColumn('topotestschema', ...
1
vote
1answer
37 views

Is there a PostGIS function to get a tangent and normal line?

I'm looking for a function that will return a tangent (and normal) for a LINESTRING in PostGIS. I think this is the 3rd time I've come across the need for this function and everytime, I end porting ...
0
votes
0answers
36 views

GeoServer, OpenLayers and updatable views: unable to edit data of WFS-T feature layer

I am developing an web application, where the user is able to view and update some feature attribute of a WFS layer. My problem: the edited data is not saved at all. Here's the situation: GeoServer ...
4
votes
4answers
2k views

Where can I download the exercise data for The Free Quantum GIS Training Manual?

Where can I download the exercise data for The Free Quantum GIS Training Manual? The pdf of the manual just mentions the sources of the data, but doesn't give any links.
-1
votes
1answer
26 views

What kind of coordinate system has values like 48569.800mE, 706602.032mN?

I am seeing the following set of coordinates, and I was wondering what kind of system is this? 48569.800mE, 706602.032mN
0
votes
1answer
80 views

how to get json from describe feature type

i m using geoserver 2.1.3 i want to get the fields of layer from database http://[localhost]/geoserver/wfs?request=describeFeatureType&typename=topp:states this reurns me output in xml format how ...

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