5
votes
1answer
48 views
How to create a point along a line given a distance from another point
I'm trying to figure out a point(D) on B-C that is a specific distance from A.
I really don't have any idea on how to proceed with the ellipsoidal math so I figured I'd ask here. How would I figure ...
0
votes
0answers
15 views
connexion to postgres and update attribute table of a shapfile in QGIS [duplicate]
I have created a plugin with "plugin builder" , now I search to connect my plugin to postgres. I have a shapfile and I try to find a script in Python that can use to assign a SQL query to my table ...
0
votes
0answers
37 views
Adding attachments to features
Does anyone have an elegant solution to adding/viewing attachments, like a table/photos for example from within ArcMap using only the ArcGIS basic license level? Or any suggestions?
I'm looking for ...
0
votes
0answers
30 views
OD cost matrix Arcpy
I'm trying to create an OD cost matrix python script.
I'm doing an OD cost matrix analysis. I'll find out the average time with patients to hospitals over 10 years. When I do this analysis, the ...
0
votes
0answers
21 views
Is there a JavaScript SDK for Vehicle Tracking?
Does exist a JavaScript SDK for Vehicle Tracking? Like this:Map Suite Thanks.
3
votes
1answer
37 views
ArcObjects Geoprocessing Failures
I am working on launching the GenerateNearTable using the ArcObjects Assembly method. I have the advanced license (10.1), so the tool is available. The code to launch geoprocessing is:
Private ...
0
votes
0answers
9 views
upload file via geoserver rest and openlayers' application [duplicate]
simple question: by developping an openlayers web application with geoserver, how to upload a file( eg:shapefile) to display it with openlayers; using geoserver REST api???
0
votes
0answers
13 views
facilities reached from a road within 5 minutes using New Service Area
I have a new service area (loaded facilities) and I need to find the facilities within 5 minutes from a certain road. I have set it up in the service area (Analysis settings: Impedance as length, ...
1
vote
0answers
22 views
Create world file from kml
I have a KML file for a NASA image. I want to create a world file from it so I can use the image in say QGIS. Is it possible to extract the key info (bounding coordinates) from the KML? It seems to be ...
0
votes
0answers
11 views
Change directories to access different files within Python Add-In [migrated]
This might be a general programming question but since I am doing it from within an Add-In therefore asking here at GIS forum. I have a project folder with sub-folders containing several files on my ...
0
votes
0answers
19 views
Receiving Label Expression error
Writing simple label expression in python. It looks like this [Well_Name]+'\r'+ [TCA] . They are both string fields. I receive the following error "TypeError: coercing to Unicode: need string or ...
1
vote
0answers
11 views
GDAL Plugin with a different version of GDAL aready built into QGIS
My qgis windows version is 1.8.0 Lisboa and use the gdaltools in version1.9.2.
I want to use the plugin NetCDFBrowser, but this plugin need the gdal 1.10.
I install 1.10 stand-alone gdal find here ...
0
votes
0answers
12 views
In QGIS Python can you nest QgsFeatureIterators on the same layer
I'm using the QGIS Weekly 1.9.0 in order to access the getFeatures(QgsFeatureRequest) method. The script is run in the Script Runner Plugin v0.71
Can anyone tell me what's wrong with this code? The ...
0
votes
1answer
17 views
How to estimate distance from points to line feature with v.distance?
I'm trying to use the v.distance module in GRASS 6.4.3 to estimate the distance from a series of point features (animal tracking locations) to the nearest point along a line feature (a coastline). I ...
0
votes
0answers
39 views
How to assign a SQL query to a table attribute?
I have created a plugin with "plugin builder." Now I seek to connect my plugin to postgres. I have a shapefile and I try to find a script in Python that can assign a SQL query to my table attribute. ...
2
votes
1answer
47 views
How does QGIS calculate the area of a polygon?
I am working on a project that requires the calculation of the area of a polygon by two different methods. I need to know what algorithm QGIS uses to calculate the area of a polygon. I know ESRI ...
0
votes
1answer
21 views
repeated feature on my Geoext combobox
am trying to load data in a combobox from my layer in geoserver. i succeded to that but i have repeated features, how to restrict the loading so as to not have repeated value on my combobox, here's my ...
0
votes
0answers
29 views
Use QuantumGIS to bulk-import csv files
I have a large set of .csv-files containing geographic information. Every dataset consists out of 2 .csv-files! This is my folder-structure. All files in Tracks are formatted equally and all in Routes ...
0
votes
0answers
12 views
Can I use the globe plugin on a Windows OS and where can I find the plugin for QGIS?
I am trying to add my layers (health facilities and pertinent infrastructure within a region) to a 3D image of the landscape and someone recommended I use the Globe plugin. I can not find the Globe ...
2
votes
1answer
34 views
PostgreSQL, find points near points
I'm going to have a database with a 'people' table and a 'shops' table.
I'd like to find all people within 500m of a shop, and details from both tables.
I'm used to working with mySQL, but I'm ...
2
votes
1answer
42 views
How to catch invalid expression errors in Python?
I have a script that creates a new feature using arcpy.GetParameterAsText, but I'm having trouble creating an error message for incorrect user input. The input for a parcel # should be something like ...
3
votes
1answer
37 views
what is the minimum to install of QGIS for it to work?
This may sound like a daft question, but I'm looking to understand what the minimum parts of the install procedure I need to install to get QGIS to work (i.e. can it be installed without GRASS etc?) ...
2
votes
2answers
28 views
Getting started with gdal/ogr
I found some batch code using ogr2ogr in order to convert and reproject vector layers. The difficulty for me is to know what to install and which gdal commandline should I use, and how to configure ...
1
vote
1answer
23 views
What to do when raster cell size is larger than zonal vector feature in order to collect statistics?
I am trying to extract the mean cell values for a raster dataset based on a survey grid polygon feature using ArcINFO 10.4. The cell size of the raster dataset is about 4 times the size of the survey ...
-2
votes
0answers
33 views
open layers popup questions plz help me [closed]
Please help me.
http://dev.openlayers.org/sandbox/CloudAmber/Trunk/GooglePopups.htm
I want to include these Google-like popup's functions in my code (below).
<!DOCTYPE html>
<html>
...
2
votes
1answer
24 views
Jsonp Callback error
Recently we have started migrating application from Javascript API 3.1 to 3.5 and we are finding this jsonp error coming sometimes during adding the layer.When we add the layer we also zoom to the ...
2
votes
1answer
33 views
Why are towgs84 definitions missing on Ubuntu 12.04 compared to Windows?
Why for some of my most used CRS the 'towgs84' part of the definition of the layer spatial reference system is missing, compared to the QGIS for Windows?
EPSG 3004, 23032, 23033 when used with QGIS ...
1
vote
2answers
60 views
How to convert .geotiff --> .tiff?
How to convert .geotiff files to .tiff files (ordinary plain images)?
Basically, I have cropped the image to a rectangle of interest and
knowing its left-lower location and having chosen the pixel ...
3
votes
1answer
27 views
How can I hide a tool from command window under category
I have created a tool, a button and a dockable window under one project. To open/close the dockable window, button is used. For some specific work, by clicking some specific button from dockable ...
1
vote
1answer
24 views
R : convert a spatial polygon objet to spatial polygon data frame
My goal is to modify an existing shapefile by merging certain polygons.
After importing the shapefile and using the UnionSpatialPolygons command, I get the polygon outline that I want.
However, this ...
1
vote
1answer
58 views
GeoServer Web Admin Interface: 404 error
I'm working through the OpenGeo workshop and I'm stuck with setting up a GeoServer. When I try to access the Web Admin Interface localhost:8080/geoserver/, Tomcat reports a "HTTP 404 Status" error ...
0
votes
1answer
18 views
ArcGIS Server 9.3 - Javascript API - Selecting Feature Problem
I have ArcGIS Server 9.3 , I'm trying to use the JS API , I successfully displayed the map , and also i could locate a feature based on ParcelID value , zoomed into this parcel , the problem is i ...
1
vote
1answer
18 views
Editor and projections ArcGIS
When opening an edit session Arc is telling me that some of my shape files' coordinate systems do not match the data frame.
Here is the data frame coordinate system:
Stereo_70
Projection: ...
0
votes
0answers
10 views
“could not get any sources: no image returned from source WMS” error in mapproxy demo
I am trying to connect my mapserver to MapProxy. First part of the map file is shown below
MAP
FONTSET "fonts.lst"
IMAGETYPE png
MAXSIZE 4000
SIZE 800 800
EXTENT -20000000 -20000000 20000000 20000000
...
0
votes
0answers
11 views
Get Conflict Value from ConflictWindow
When i reconcile a version in my Arc Map. I am getting conflicts which i was able to see in a conflictwindow. I want to read conflict values only from the conflictwindow. So that i can generate a log ...
1
vote
1answer
38 views
How to restore a back up file into pgadmin III
My backup file containing about 50-60 tables , but I am able to just load only 6 tables for a new db and 31 tables for postgis dbase . And this was the error when I restore a backup file.
pg_restore: ...
1
vote
0answers
17 views
GPS Coordinates to WKID 102100
I'm currently creating a project for ios and I'm using the latest ArcGIS IOS api. I have a mapView that is using the spatial reference skid 102100 and i am receiving lat long coordinates from an ...
4
votes
2answers
52 views
What does Scale mean in the reference of Desktop GIS or WebGIS?
I'm having trouble understanding the meaning of the concept of scale when it comes to maps on screen, i.e. either in a Desktop GIS or in a WebMap.
When it comes to paper maps, the idea is very clear. ...
0
votes
0answers
28 views
Qgis WPS client and PyWPS error with output data
Hi I'm running PyWPS service with some processes. Everything is working fine bud i wanted to try Qgis plugin WPS client and problems showed up.
First thing is that my process takes a while but Qgis ...
0
votes
1answer
33 views
ArcPy Field Calculation with special characters
I'm trying to calculate a string field, using "µSv/h". Running this in the manual field calculator works just fine, but I've tried this in the Python window in ArcMap as well as the IDLE, but both ...
0
votes
0answers
25 views
Design a routing system
I am trying to develop an application that builds a route based on points of interest, basically it should show the route and the points of interest and when the user clicks it will display some kind ...
0
votes
1answer
22 views
MapServer SOS Example
We are trying to run the MapServer SOS example at this link. However, we don´t know how to configure the data parameter in the mapfile.
What do we have to set in mapfile´s data parameter?
We need to ...
1
vote
1answer
26 views
Using the C++ GDAL API how do I set the GDAL_DATA path?
If I want to change the directory of the GDAL_DATA path or point to a different version of a csv file for EPSG numbers how do I do that using the C++ API?
1
vote
1answer
24 views
Picture Labels with leader line from point without annotation?
The closest thing I have is using a line call out in the text background, then placing the picture in the line call out border. But the picture tiles throughout. Is what I am trying to do even ...
0
votes
0answers
18 views
Erdas: putting a safeguard when recoding values and toggling image layers with hotkeys
I have two question about Erdas:
When recoding values using the recode tool is there a way to put a safeguard in place so that I don't accidentally recode out of an AOI?
Is there a way to toggle ...
-1
votes
1answer
41 views
CSV with latitude and longitude to a spatial points with QGIS 1.8
i have a csv file with latitude and longitude of several addresses and a shape file of a region. I want to plot this points of the CSV file into the shape file. But I don't know how to transform these ...
0
votes
0answers
19 views
EPSG 4267 (NAD27) boundaries
I need the bounding box coordinates for NAD27 (EPSG/SRID 4267) to check the user's coordinate input.
http://spatialreference.org/ref/epsg/4267/ shows the area that doesn't cover North America at ...
1
vote
1answer
21 views
In MapBasic, how do I open a connection to MapMarker so I can allow my app to geocode?
I would like my app to open up MapMarker and automatically geocode for me. I cannot get past the Open Connection statement as I am receiving an error while compiling. Here is the code:
Include ...
2
votes
1answer
70 views
Python Code: “Compare two fields and select missing records”
The code I wrote is not right!! It's selecting more than what is actually missing. I think I'm wrong on the matched code line. I need the script to make a list of the "FLAG" field and a list of the ...
1
vote
3answers
96 views
How to convert KML (Google Latitude) to SHP on Linux?
I downloaded a KML track from Google Latitude. The service allows to download the tracked route from the user's profile providing a link such as:
...
