All Questions

0
votes
1answer
4 views

is OpenLayers proxy access secured?

I have secured my layers on Geoserver. Users can not access my layers without authenticated username and password. Now I created a proxy script with PHP. Proxy script sends request with username ...
0
votes
0answers
3 views

tutorial data request

I have found the following tutorial on the internet. https://cnr.usu.edu/streamrestoration/files/uploads/Part%202%202010%20Resources/Wheaton_D2_Topo_Excercise.pdf I wanted to know if anyone has ...
0
votes
0answers
2 views

Geoserver fails to start after installing scripting extension

I use Geoserver 2.6.0, it worked until I installed latest scripting extension. I followed installation instructions (http://docs.geoserver.org/stable/en/user/community/scripting/installation.html). ...
1
vote
1answer
244 views

Query Layer not found ERROR 000229

My code executes in three steps: create FeatureLayer, create QueryLayer and join QueryLayer to FeatureLayer: arcpy.MakeFeatureLayer_management(**{ "in_features":features.get_dataset_fullpath(), ...
2
votes
1answer
276 views

Why does a geoprocessing service fail every other time it is run?

I have a ArcGIS Server 10 geoprocessing service right now that takes in a string and runs a parameterized query to SQL Server 2008R2 through pyodbc. The service works, but only every other time. I can ...
0
votes
0answers
4 views

QGIS 2.6 Where did “Open from template” go?

In QGIS 2.4 there was a menu-point in "Composer" (Composer > Open template) where I could open a saved template, see the map I was printing and move the map in the frame to the exact position that I ...
9
votes
2answers
1k views

How to enable SEXTANTE toolbar in ArcGIS 10.1

I have just upgraded to ArcGIS 10.1 from version 10.0. I am trying to add the SEXTANTE tools to ArcToolbox. I have followed all the instructions from the SEXTANTE website. I have also tried the ...
11
votes
4answers
1k views

Performance of ArcGIS Engine using multiple file geodatabases as opposed to one?

I'm trying to decide the best way to organize my data for an ArcGIS Engine application. I am particularly interested in map display and query speed. Currently I have all of my data separated into ...
9
votes
3answers
1k views

Speeding up Python calculated timestamp field in ArcGIS Desktop?

I am new to Python and have started to create scripts for ArcGIS workflows. I am wondering how I can speed up my code to generate an "Hours" double numeric field from a timestamp field. I start with ...
4
votes
1answer
72 views
+50

How can I calculate route using travel time in network analyst?

I'm new in ArcGIS network analyst.I simulate the network for route using live traffic data(fig1) . The traffic data gives travel time .When i want to use routing, the results is not true based on ...
0
votes
0answers
7 views

Replace for Tilecache?

I tried to use Tilecache with my mapserver/openlayers/postgis/cygwin configuration, but no success so far, I just got tired of keep digging on the whole system to get that thing working. So, could ...
0
votes
0answers
10 views

Creating DEM from geoTIFF or asciiGRID LiDAR data?

For a home project I want to 3d print an area from a map. I have downloaded a geoTIFF file and an asciiGRID file from the Tasmanian governments spacial program "TheList" The two files are here: ...
2
votes
1answer
187 views

using PostGIS to calculate distance of a route over a large area

I'm new to PostGIS and looking to measure the distance of the Pacific Crest Trail which spans western North America from Canada to Mexico. I have a data set containing the lat lon and dates from GPX ...
0
votes
1answer
15 views

Get value of clicked raster cell

When I open a raster file in QGIS (for example a GeoTiff file), I want to quickly check the value of a clicked raster cell. I found there's an 'identify' tool in the toolbar, but when I click with ...
0
votes
1answer
12 views

Iterate through a shapefile

How do i iterate through a shapefile using shapely. This is my code but it keeps outputting the same id. I think that it keeps looking at the same record. fc = fiona.open("file1.shp") print fc.schema ...
0
votes
0answers
4 views

How to fix scaling mismatch of shape file layer & PostGIS table Lat/Lon data layer for India Map in Geoserver?

I have generated India map in Geoserver using the shape files downloaded from "www.diva-gis.org/gdata" site. Now, when I expose my PostGIS table layer having Lat/Lon data for Indian cities, on top the ...
1
vote
0answers
5 views

How to add multiple locations to google map?

Well I am not a js developer, and I want to build a google map with multiple locations. I have a styled google map which looks like this, and I like to add some locations. After some research I found ...
0
votes
1answer
145 views

How to customize Directions widget of ArcGIS Viewer for Flex 3.4 using Flash Builder 4.6?

I want to customize the Directions widget in order to be suitable for my application. However, I do not know how to show a Directions widget without signing in to resources in http://www.arcgis.com. ...
5
votes
2answers
97 views

Can QGIS give GeoJSON layers a meaningful default name?

When I add a GeoJSON layer to my QGIS project, it always gets the name OGRGeoJSON. This is in contrast with shapefile layers, which seem to be named after the file name by default. Is there a way to ...
0
votes
0answers
4 views

How to implement place auto-complete using nominatim?

hi i want auto complete like google place and I dont'want to use Google Place API. I Got nominatim auto-complete example but it's not working in my windows 8 because it's implemented in node.js please ...
2
votes
2answers
401 views

How to use gdal module in python

I am trying to import gdal modules from osgeo installed in my win64x machine but I get the following error: Traceback (most recent call last): File "", line 1, in from osgeo import ogr ...
0
votes
2answers
320 views

How do I successfully install the LecoS plug-in for QGIS 1.8

I have been trying to follow the instructions given here, but repeatedly get an error message pop-up titled "Mount" stating Access is Denied. Does anyone have a solution please?
2
votes
2answers
621 views

How to create a valid global polygon grid in PostGIS?

I want to create a grid spawning the whole globe. The grid is used to measure a density value by counting the number of certain spatial objects in each grid cell. To create the grid, I have created ...
1
vote
1answer
89 views

produce a grid of geographic coordinates within 1 mile of each other with QGIS or PostGIS

For a given county (bounded box, lets say), I need to get a network of gps points such that each point is 1 mile from its nearest neighbor point in each cardinal direction. The result of this initial ...
1
vote
3answers
446 views

How to infinitely extend MapInfo grid layer?

We use a semitransparent grid layer (.mig file) to show 'hotspot' intensity in MapBasic (MapInfo. Because the grid is just a rectangle, this looks ugly. See for instance: . Now MapInfo allows grid ...
0
votes
0answers
35 views

TIF file creation from shapefile in GRASS?

Does anyone have any idea how to get around this problem? I've been looking for a solution to no avail. I'm trying to convert a shp file to a grid, and the tif is hanging up. Output raster layer: ...
-1
votes
1answer
108 views

How to locate 'symbols' by means of grid cells in MapInfo?

I am new to Mapinfo and GIS in general, but I have a new job in a company that works with maps and GPS and now I am being trained. My question, and I have looked a lot and I couldn't find anything, ...
3
votes
1answer
40 views

How do I get rid of this thin band between raster layers created from TNM?

After hitting my head against the table for many days, I'm humbly presenting myself to the QGIS community. I downloaded 4 IMG files (1/3 arc second, elevation data) from The National Map on the USGS ...
2
votes
1answer
429 views

Best way to get the overlapping segment of two lines

Could anyone help me figure out the best way to get the overlapping line segment of 2 line sdo_geometry objects? my query looks like this: select SDO_GEOM.SDO_INTERSECTION(SHAPE, :SHAPE, 0.5) as ...
1
vote
1answer
396 views

Select features of layer which is not on top in OpenLayers

I have posted this question before on the general StackOverflow forum: http://stackoverflow.com/questions/16278569/select-features-of-layer-which-is-not-on-top In short my problem is that I have a ...
0
votes
0answers
2 views

How to export data from saga or tas into excel?

I want to derive terrain attributes from DEM with saga and whiteBox GAT (SAT). I have problem in exporting data into excel. would you help me?
8
votes
3answers
2k views

Ordnance Survey grids - download or generate?

Does anyone know a source from which to download vector UK Ordnance Survey grids at varying resolutions? Or failing that, a tool that can create an OS grid at a specified resolution? There are plenty ...
11
votes
4answers
1k views

How can I generate irregular grid containing minimum n points?

Given a large (~ 1 million) sample of unevenly distributed points - is it possible to generate irregular grid (in size, but could also be irregular in shape if that is possible?) that will contain ...
0
votes
2answers
410 views

C# Microsoft Visual: Setting text box value to null

I'm creating an attributes table in ArcObjects to show a bunch of values. They save just fine when I put them in, the problem is reverting them back to null. My text values all get turned into a blank ...
1
vote
1answer
113 views

Copying representation symbology from one ArcSDE version to another?

We are having problems with our representations when copying from an ArcGIS 9.3 database to a 10.0. Representation symbologies with dash patterns (dots, dotted lines etc.) are reset to default ...
1
vote
5answers
228 views

Make a polygon out of a polygon's hole?

I have a large polygon with many vertices that has a hole in its center. I want a polygon of the hole, the empty space. How can I easily do that? (It is much too complicated to digitize easily)
0
votes
1answer
6 views

Z-index in OpenLayers 3: layer ordering in OL3

Is there a method to cjange Z-indexes of layers in OpenLayers3 like it was in old version? map.setLayerIndex(markers, 99); //set the marker layer to an arbitrarily high layer index and I need to ...
2
votes
1answer
974 views

Problem with WFS-T save strategy in Openlayers

In my web map application, I have added the editable wfs vector layer for feature editing. But in save strategy method, Insert and Update Geometry is working fine.But Update Attributes is not saved in ...
0
votes
1answer
29 views

How to plot the US maps with selected locations (longitude and latitude of the locations are known)?

I've been struggling with the following R plotting of the US map and wonder if any of you have suggestions on how the plot should be done. Here is what I have tried: US <- map("state",fill=TRUE, ...
0
votes
0answers
11 views

How to build a map that highlights only one state?

I'm a journalist working on maps of several Alaska databases. I'm learning as I go and have a question that's probably very basic, but very important for my projects: Using CartoDB, how can I create ...
0
votes
1answer
165 views

How to convert NetCDF file to Grib2 or Grib files

I'm in trouble to read NetCDF file data. Basically NetCDF file contains Ocean current data. How do you convert a NetCDF file to a Grib2 or Grib file? I already have procedure to read data from Grib2 ...
3
votes
1answer
1k views

How can I add a grid (from projection MTM8) on my layers

I need to add a grid on a map I created with my own layers and GPS data. How can i do this? I know how to do it in Arcgis, but not in QGIS.
4
votes
1answer
133 views

How do I split a vector layer into separate grid layers?

I need to split a vector layer into 1km x 1km squares so I can carry out some calculations for these individual areas. Is there a feature to do this?
3
votes
2answers
480 views

How to display DMS in QGIS print composer?

Can we display degrees, minutes, seconds in QGIS Print Composer window instead of decimal degrees? Is there any plugins available for that?
0
votes
0answers
3 views

Query tool option missing in publishing maps with geoexplorer

I want visitors to a website with a published map created by Opengeo Geoexplorer to query the layer (layers, if possible) it contained. I am able to use the query tool while composing my map within ...
2
votes
2answers
197 views

Driver Error : DTM to Raster using GDAL_GRID

I am looking to interpolate a DTM (eventually over 4,000 DTMs) that is in a personal geodatabase format. I would like to do this in as few step as possible, eventually writing a batch script to do ...
3
votes
0answers
45 views

Select and copy attributes features in ArcMap using Python add-in tool?

I'm trying to add a tool to an add-in toolbar to select features from an existing feature class and copy attributes to another feature class,from point to point. TopoHeight_Field_Name='Comment' def ...
61
votes
20answers
10k views

How to Start Web Mapping?

I want to start working on a web map at work to map some of our statistics by city. I have an idea, but I'm not exactly sure where to start. Are there any definitive resources that provide step ...
0
votes
1answer
94 views

Naming naming output files where original file name retained without file extension using ModelBuilder iteration?

I am using iterate raster in ModelBuilder to create hillshade and slope simultaneously for many rasters within one folder. My problem is when I name the output files. Whenever I use, %Name%, the ...
0
votes
0answers
8 views

Create css Flex Module Edition

I would like to change the style of the component Flex Edition . The functionality is what I need but I find too much space it occupies such module for which I would like to make changes to style ...

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