1
vote
1answer
29 views
How to iterate all input folders (containing coverages) using Python with ArcGIS 9.3?
I'm trying to write python scripts to batch convert thousands of coverages to shapefiles in arcgis 9.3. The coverages files are in different folders:
d:/area_A/building
d:/area_B/building
...
1
vote
1answer
21 views
OpenGeo Suite start up failure
I started the openGeo Suite 3.0.1 in Windows 8 and after a while I get this error:
Giving up on starting the Suite as it is taking longer than expected
Any idea?
0
votes
2answers
25 views
PostGIS, distance between two users
I have a simple table (location_test) with three column (name, geom , jid). geom is a geometry column with SRID 27700. I set the user's geometry position with:
UPDATE location_test SET geom = ...
1
vote
1answer
32 views
How to select points within a polygon from another layer?
I'm using QGIS 1.8 with a PostGIS database and I have three postgis-layer in qgis a lines layer, a points layer and a polygon layer.
What I'm trying to do is to select a polygon in the polygon layer ...
2
votes
3answers
83 views
How to convert a txt file to shp?
I've got a txt/csv file with the utm coordinates and the hights. Now I want to upload this into qgis. This is not a problem so far. The problem is to create a shapefile out of the data with an ...
1
vote
1answer
22 views
Probleme with WFS protocol in OpenLayers
Sorry for disturbing. I know my problem look common, but I really don't know what to make.
Here is my code for getting a WMS layer in OpenLayers from Geoserver.
var wfs2 = new ...
1
vote
2answers
65 views
Where can I go to have a rant about Open GEO Data?
Which is the most popular GIS forum or website that's not under the control of our corporate or government overlords?
This place is great for questions and answers, but if I want to have a discussion ...
1
vote
0answers
25 views
Applying proper correction from True to Grid
I have a very basic question that will seem very elementary to most who observe this website. The reason I ask is because I have been told to difference answers and I'm now a little confused. So, here ...
0
votes
0answers
30 views
Fill up polygons with field value
I have now defined my renderer with a color map
I want to fill it with a value in the end field of my shape file's attribute table with python
how to do it??
I use QGIS 1.8.0 with python 2.7.3
-2
votes
0answers
20 views
Future Climate Variables [closed]
I want to know future climate variables.
There are many Regional Climate Model, so I'm not which the best.
Again, I don't know what required data to run the model.
If possible models that run under ...
0
votes
1answer
22 views
ESRI Linear Referencing and negative lengths
I have been asked this question regarding Linear Referencing (for Arcmap 10.1), but i do not have much experience with it so I am hoping someone out there can help.
Essentially, I want to know how ...
-1
votes
0answers
19 views
how to fetch the geographic data for a given scope effectivily [closed]
We have the shapfile data in the backend, and now we have to get the features for a given scope (for example a BBOX), so what is the effective solution?
Update:
We are building an android ...
3
votes
2answers
28 views
How to know what spectrum image layers are in eCognition?
I'm learning to use eCognition (8.1) and my teacher has provided me with some example tif files to segment and classify. The tif files have multiple layers, each of which are supposed to represent a ...
1
vote
1answer
15 views
what is the metadata link in geoserver layer definition for?
I`m adding some layers in geoserver and I noticed that there is a place to put a metadata link. It also says that it should be according to FGDC or tc211.
What can I put in this metadata link field? ...
2
votes
1answer
24 views
Install the Pgadmin3 shapefile importer plugin on a Mac(10.8)?
I'm new to GIS related things and I'm setting up a Postgre/Postgis database for geospatial queries. I'd like to import various shapefiles into the database and I found that Pgadmin3 has a shapefile ...
3
votes
2answers
35 views
Search MXDs for feature class
I've inherited a large somewhat messy database and am attempting to clean it up a bit.
Does anyone know if it is possible to search a database to see what arcGIS map documents use a feature class? I'd ...
1
vote
1answer
35 views
Python - GDAL: spatial filter
Is there a way with GDAL (Python) to set a spatial filter (bounding-box) on a raster before I process it? I want to read it as an array.
BandReadAsArray(band, xoff=0, yoff=0, win_xsize=None, ...
1
vote
1answer
25 views
Arcmap 10 project: Finding best site for a new powerplant
I'm an electrical engineering student taking GIS introductory course as an elective. i have learned the basics of Arcmap 10 like adding data, creating maps, editing shapefiles etc. Now, i'm required ...
0
votes
0answers
36 views
How to find out what projection my data is using?
I have a set of data that I created from gps locations of images. The locations are in decimal. I don't know what projection was used when the data was captured.
I used QGIS to display the data with a ...
2
votes
1answer
44 views
How to split single lines to represent two-way streets?
I am working on a project using city road data. The data has every road in the city visualized as lines and with directional data stored in the attribute table (one-way to-from, one-way from-to, and ...
1
vote
1answer
21 views
Pseudo Mercator error?
I'm mapping on QGIS, I have a vector layer and his CRS is on EPSG:4326 - WGS 84, but also I wanted to put a satellite image, so when I do it, the image use WGS 84 / Pseudo Mercator.
The problem is, ...
3
votes
1answer
33 views
How to check via Arcpy if ArcMap is currently in an edit session or not?
I've created a Python add-in button that helps speed up my coworkers workflow by copying one feature class attribute to another. It uses the arcpy.UpdateCursor function to update a row in the target ...
0
votes
0answers
26 views
need info on GeoTIFF projection keys
I am a programmer (not a cartographer!!) developing an application which needs to read and write GeoTIFF files. I have a number of questions about those GeoTIFF keys which are related to projections.
...
1
vote
1answer
23 views
How do I convert 3tm to lat-lon
I'm unable to find out a formula for converting 3tm coordinates to lat-lon? 3tm is a system used in Alberta alone, as far as I can tell. The city of Calgary uses that for its opendata, which is what ...
0
votes
2answers
32 views
Stacking attributes in a text field
I am trying to stack my text in an attribute table using the field calculator, but it does not seem to be working.
My field name is: Facilities.
My attributes are in this format: Public ...
0
votes
1answer
23 views
Raster Clipping and Manipulation
I have two raster tiff files one is a raster that I created from 2 Foot contour lines, the other raster file is a small area that was surveyed to half a foot accuracy. My question: Is there away to ...
-2
votes
1answer
17 views
Render specific vector data from database with openlayer
I want to render some data on a map. They are stored as points in my database (postGiS), each one is associated with a name. I want to render points with the same place name in the same color.
...
5
votes
2answers
59 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
16 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
1answer
26 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
12 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
18 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 ...
-1
votes
0answers
45 views
How to assign a SQL query to a table attribute? [closed]
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
53 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
30 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 ...
1
vote
1answer
16 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
36 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 ...
