0
votes
0answers
5 views
Help needed with the use of FARSITE
Is there anyone who has worked with FARSITE? I can build some of the files needed, such as slope and aspect, but not sure where to start when it comes to building files for 'canopy', 'fuels', etc. I ...
0
votes
0answers
6 views
TileStache + Mapnik - Tiles are rendered randomly
I newly turned to TileStache to render Mapnik tiles because of the caching option. Before, I was using Mapnik python bindings only and it was working perfectly. Now that I use TileStache, the tiles ...
0
votes
1answer
14 views
ARCGIS Python script (needs a raw input line to let the user choose the output file name)
I just need a quick fix here.
Having trouble finding a way to allow the user to input the new output file name (the one that is created after the buffer function completes). Any ideas?
I am also not ...
0
votes
0answers
7 views
Event Layer Plugin is not functioning
Deas All,
I have an .mbd, which is linked into Qgis trough ODBC with following attributes: Route ID, from (meter), to (meter).
I have a shp which has the same Route ID and I should be able to use the ...
1
vote
1answer
18 views
Visualize shapefile in Python
I was searching the internet to see if it is possible to visualize geographical data in Python, without always opening ArcGIS and make a map (because I have a lot of scripts that uses arcpy). On the ...
0
votes
0answers
14 views
GIS Maximum area coverage problem
I want to find optimum antenna location for an area. Every antenna can cover an circular area. These areas diameter is 750meter. So how can i find minimum number of antennas and locations.
NOTE: I use ...
0
votes
0answers
23 views
How to write vector layer to csv file with geometry?
I try to write vector layer file to csv file with this code
QgsVectorFileWriter.writeAsVectorFormat(mylayer, r'c:\temp\xyz.csv', "utf-8", None, "CSV")
it can export to xyz.csv but only attribute ...
0
votes
1answer
8 views
geojson -> topojson : no output
Trying to convert my geoJSON file into topoJSON so
I downloaded topojson from npm and
followed the instructions on gis.stackexchange Convert GeoJSON to TopoJSON
basically the same as the topoJSON ...
0
votes
1answer
15 views
How to rescale vector data (QGIS)
I've got some old maps in dxf format. QGIS imports them correctly but with a nonsense scale. It can export the data it gets to shp of course. Does anyone know how to rescale vector data so it can be ...
1
vote
1answer
19 views
Pgrouting - Networking
my problem is regarding routing.
I have a network based on bicycle graph links (SRID: 4326), with bidirected and directed ways.
I want to give the user the functionality to draw a route (shortest ...
0
votes
0answers
11 views
How to set transparent geotiff by GDAL? [duplicate]
How to set transparent geotiff by GDAL?
I get png with transparent background but i use gdal_translate - background is with.
1
vote
1answer
10 views
3D and 2D lengths of lines in ArcGIS
I have a 2D road segment and convert it into 3D using a raster in ARCGIS 9.3. So, what i see is that the length of 3D road segment is still the same as the 2D road. How can this be? As due to ...
0
votes
1answer
16 views
ArcScene wont open a high resolution DEM and tells me to select a subset - but how?
I'm using ArcGIS 10.0 and trying to open a digital elevation model in ArcScene. I'm working on a project and got the DEM data from official sources.
The resolution of the DEM is 1 meter which is ...
0
votes
0answers
9 views
Creating 3D lines from 3D points
Can you tell me the procedure in ArcGIS 9.3 to create 3D lines which connect the 3D points using the elevation of the points.
For example, if pointA has 20 elevation and pointB has 30, then the line ...
1
vote
0answers
19 views
How to merge connected lines with same direction (PostGis)
I am looking for a way to join all lines that are connected, have the same direction, i.e. start point of one is end point of the other, and share some common attributes. In fact, I want to connect ...
2
votes
1answer
39 views
What is the best method to publish a large amount of data on ArcGIS Server?
I am publishing 2 million records using ArcGIS Server. We are using ArcGIS for Desktop 10.1 and ArcGIS for Server 10.1.
We have district wise data for India (like State----District etc) all the data ...
0
votes
0answers
16 views
Openlayers Vector Feature label not Visible in IE 8 but visible in Google Chrome…?
I have created a WEB MAP using Openlayers-Geoserver-Postgis....
The Label of one of the Vector feature layer is not visible in Internet Explorer 8(IE 8) ,but clearly visible in Google Chrome ...
0
votes
0answers
21 views
How to create a renderer with different colors in pyqgis?
I want to know how to change the color of a polygon shapefile in qgis using python console.
I have a list of values and i need to change the polygon color for each value, like a render!
Thanks a ...
-1
votes
0answers
11 views
How to plot contours on a map with ggplot2 when data is on an irregular grid? [closed]
I wrote a question on StackOverflow earlier today before I found out about this site. It seems that the question may be more relevant for this stackexchange. I was going to copy and paste the question ...
0
votes
0answers
25 views
Mapping latlng values to a point on a HRAP grid
I have a copy of some NWS rainfall data loaded into a PostGIS database. Given a lat lng point, I want to find the rainfall for that given day.
The original data are in XMRG format and projected ...
0
votes
1answer
16 views
QGIS Symbology changes by number value
I've gotten a state file with count outlines joined to an attribute file that shows numbers of items per county. ArcGIS has the ability to set the symbology to grade the results into pre-determined ...
1
vote
1answer
40 views
Geoserver, OpenLayers so slow for WFS! Why?
I am displaying 100 000 points in a layer via WFS protocol. I need about 5 minutes. However, 100 000 does not seems so much...
My points are stored in PostGIS, in a column defined this way : ...
0
votes
0answers
22 views
QGIS Attribute table joins
I spent hours getting "null" results in joining a downloaded state and county shp file to a self-created file (SCF). What I found was that the SCF had to have "EXACTLY" the same set of names/ID#'s as ...
0
votes
1answer
18 views
how to loop grass command in python and put variable in output file
anyone,
first day Grass programming with python scripting;
first prob;
simple I want to reclass the same raster several times;
and save the file with the value loop variable at the end ...
can not ...
0
votes
1answer
21 views
OGR Projection transformation error
I am trying to convert shapefile that was created by FME in EPSG:900913 to EPSG:3857 (I know its the same definition) with OGR in a script.
datasource = ogr.Open(os.path.join(dirname,shapefileName))
...
2
votes
1answer
43 views
How to run a custom Geoprocessing tool using no parameters?
I created a custom geoprocessing tool called "CreateCoverLayer". It has no input or output parameters. I have the following snippet of code, but get an error message due to the fact that the Execute ...
1
vote
1answer
36 views
How to transform World data from EPSG 4326 to EPSG 3857
I have tryed different opensource tools to transform a world data shapefile from 4326 to 3857 but I always have an error. Im not sure, but is it because of Antartica?
I have tryed with GDAL and QGIS ...
4
votes
0answers
22 views
spatial and spatiotemporal analyses
I have a dataset that consists of 247 mosquito traps placed in fixed positions and sampled weekly for 23 weeks. I also have dengue disease incidence data (indexed to home address) during the same time ...
0
votes
0answers
12 views
How do I get the domain from an OGRSpatialReference?
I would like to know what the projected bounds are for a spatial reference using OGRSpatialReference. Is there some way to use the GetProjParm method to get this information?
An example of what ...
1
vote
2answers
51 views
Help excel table not transferring to Arc correctly!
New to GIS and Ive been trying to figure this out for a while. I have an excel sheet with CT names such as 0128.03, 0128.04, starting from 0001.00 and up. Not all CTs have .01, .02 at the end just ...
1
vote
1answer
54 views
Why do I need to know what “endianness” is?
I'm just learning about GIS and shapefiles. I am a total newb right now. I'm probably going to get into some SQL Spatial stuff and I'm just reading about what shapefiles are.
I keep on seeing a lot ...
0
votes
0answers
16 views
Arcgis javascript API & highcharts libraries
I'm working with jsviewer and JSAPI V:2.8.I try to display a query result in a chart.
what I want to do is :first, I want to query on my table and once I got the result liste I have a button that ...
0
votes
1answer
19 views
Apply Symbology to a group layer
I currently have around 200 features that all need have the same symbology applied to them. I have used the ApplySymbologyfromlayer_management however this takes much to long to process, at least a ...
0
votes
1answer
19 views
What's regular blocking arrangement ? (GDAL)
I am using GDAL tools to retrieve PostGiS raster. The code(command line) I am using is as follows :
gdal_translate -of AAIGrid "PG:host=localhost dbname='database' user='postgres' password='admin' ...
1
vote
0answers
16 views
Flow direction for line segments
My sanitary sewer data (shapefiles) is being merged with data from another GIS firm for a large project and they are asking me to flip all my line segments because they believe they are backwards but ...
0
votes
0answers
12 views
Is there any way to spead up the Properties - Change Symbol and Symbol Selector - Edit Symbol actions?
Is there any way to tweak ArcMap to make the loading of the Symbol Selector and Symbol Editor dialogs faster?
I have a lot of symbols in my style files and I want to keep it that way since it is ...
1
vote
2answers
30 views
Start postgresql+postgis without installation on Windows
I have used Windows7x64 and want start PostgreSQL+POSTGIS without installation process. I copy PostgresSQl\9.1 folder from other laptop to c:\opt. I need create .bat file with enviroment variables and ...
0
votes
1answer
24 views
Comparing ShapeFile Data in C# [closed]
I have made a List containing all the original data (.shp files), and I have another List containing the modified data. I basically want to check all the modified file data against the original... So ...
1
vote
0answers
28 views
Trigger to fill attributes (data, client ip) in table for each new objects, PostGIS
In PostgreSQL/PostGIS database stores shapefiles. Client users software - QGIS. Please help me write PostgreSQL/PostGIS trigger, which for each newly added/updated feature in layer added 'time create' ...
1
vote
1answer
18 views
Use FME to delete records from PostGIS before loading new records
I have some shapefiles. Each shapefile contains the data on a topic for a county. I have data for 26 counties.
In the filename of the shapefile, the county ID is given.
I load these shapefiles into ...
0
votes
2answers
24 views
How to scale/reduce my polygon without changing the central lat & long?
I am writing a VBA code to resize my polygon, I get a input as vector points(Shape file). The code below resizes it as according to my scale factor but my central latitude and longitude are also ...
13
votes
2answers
143 views
Which geodatabase type is most appropriate for both open source and ESRI use?
Main Question: Is there a geodatabase type that seamlessly works with both ESRI and open source products?
Details: My company currently passes around geodata in various vector and raster file ...
0
votes
1answer
16 views
Geoserver shutdown after load big imagemosaic
catalina.log:
24.05.2013 15:33:38 org.apache.tomcat.util.net.JIoEndpoint processSocket
SEVERE: Error allocating socket processor
java.lang.OutOfMemoryError: unable to create new native thread
...
-1
votes
0answers
11 views
Selecting a polygon and zooming knowing the Polygon ID [duplicate]
By clicking on a polygon, i can get the polygon id by doing this:
identifyParams.geometry = evt.mapPoint;
identifyParams.mapExtent = map.extent;
identifyTask.execute(identifyParams, function(result) ...
5
votes
0answers
19 views
How to trace SQL queries sent by ArcGIS Server (ArcSDE) to Oracle database?
I'd like to generate a log file containing all SQL queries sent by ArcGIS Server (ArcSDE) to Oracle database.
Is there a way to do so?
I'm using Oracle 11g and ArcGIS Server 10.0 on Windows. ArcSDE is ...
4
votes
1answer
60 views
How to set up Python 2.7 to work in both QGIS and ArcGIS?
I have both ArcGIS 10.1 and QGIS 1.8 installed and both include Python 2.7 in slightly different setups and in different folders (c:\Python27\ArcGIS10.1\ and c:\Program Files (x86)\Quantum GIS ...
0
votes
2answers
25 views
Zooming into a particular polygon
I am getting the polygon id by doing
identifyParams.geometry = evt.mapPoint;
identifyParams.mapExtent = map.extent;
identifyTask.execute(identifyParams, function(result) {
var i;
var ...
0
votes
0answers
18 views
Pyscripter hangs on spatial join?
I've got a script which loops through a series of FC layers (tracker points). Using a FOR loop, they're reprojected then joined to a streets layer.
Sometimes it works fine, then other times it never ...
3
votes
2answers
47 views
“GIS” Mapping on Monument - Scaling
I have a Baroque tombstone for which I have to map the damage phenoma. Normally one can use a vector drawing programm but one has always two boundaries between the different polygons. Questions:
Is it ...
1
vote
0answers
24 views
Problem using grid with a vector layer
I need to establish a model of maritime pollution and I try to use the grid option to work on ocean sectors. I tried to use my grid on a vector file, .shp, with points. Each point is a maritime ...
