16
votes
4answers
4k views

How to buffer in pyQGIS?

I'm looking for some examples to do simple python scripts in QGIS. How would I do a buffer analysis on a dataset? I can't seem to find much in the manual and QGIS python that quite matches the Esri ...
14
votes
4answers
3k views

Are there tools to directly import QGIS projects into Tilemill?

Now that there is a tool to convert an MXD to Tilemill, one must then wonder if the ability to open QGIS documents in Tilemill will ever exist.
3
votes
1answer
1k views

Feature Layer is not showing the points on the map

I have a simple feature layer. The points will show up if I put the URL in a DynamicMapServiceLayer, but I need to use maptips, so that will not work. Below is my relevant XAML. <esri:Map ...
5
votes
1answer
159 views

Where do I append point values with pyshp?

I would like to generate a .shp with five points using shapefile available through pyshp. However, when I loop through my list I get only the last value. This makes sense as I did not append any of ...
5
votes
1answer
1k views

How to load mdb geodatabases in QGIS for MAC?

I've been unsuccessfully looking for a way to add data from a .mdb geodatabase into QGIS for mac. Using the add vector layer, .mdb is not available in the filetypes, and in the database connection I ...
2
votes
1answer
331 views

Creating 3D terrain from point data in PostgreSQL?

I am quite new to arcgis and I would like to create a 3d terrain. Now I have a postgresSQL table containing a list of points with their geometry data and the Z value for each point. What I would ...
4
votes
1answer
422 views

NAD83 and NAD83 State Plane

I'm struggling with a projection question. I have some data in California State Plane and am trying to align a NED with NAD83. I thought these would just natively align, but they don't seem to ...
5
votes
3answers
5k views

How to find the nearest point from POI in PostGIS?

I have Point of Interest data in MySQL. This are the fields latitude,longitude,address,types in which I have stored the data. Now i want to import it into PostGIS Database. But does it required ...
2
votes
1answer
245 views

How to draw labels with line in SLD?

I want to be able to draw labels with line. How can i do this? Just like labels with line of some USA states in Google Maps, labels with red line in right : Example from Google Maps
5
votes
1answer
632 views

How to calculate a standard deviation across multiple raster layers?

I have 15 raster layers. Each one shows accumulated precipitation (rainfalls) for the month of April for the same US state during a given year. So, I cover the period from 1997 to 2012. I would like ...
4
votes
1answer
717 views

How to register a Stored Procedure in ArcSDE?

I just registered a SQL Server view with ArcSDE through sdetable -o register [...]. I wonder, how to register a SQL Server stored procedure with ArcSDE? Is it the same process as the view? EDIT ...
5
votes
1answer
663 views

How to automate downloading “slices” of data from Web Coverage Service (WCS)?

I'd like to automate downloading "slices" of data from a WCS service. This is a WCS 1.1.2 service, supporting netCDF. The data are updated daily - forecasts from an atmospheric regional model - and ...
2
votes
0answers
317 views

Image Pyramid + Geoserver + Google Earth slow with errors

I have hundreds of GB of somewhat small tif files. Here is gdalinfo of one of them: F:\gis\geotiffs>gdalinfo finaloutputSSAM211Jun181306hfwaterfall0.tif Driver: GTiff/GeoTIFF Files: ...
3
votes
1answer
484 views

Saving VBA customization to a Normal.mxt problem

I have experienced problems with saving VBA customization to a Normal.mxt document within ArcGIS 10. I have a set of VBA macros developed originally within 9.3 version of ArcGIS that reside in a ...
4
votes
4answers
4k views

Remove Polygon Islands

I'm really stumped with the problem. I have a polygon layer with no intersects or holes and I need to remove some 'islands', as defined by attributes of a certain size within the layer. It's a hard ...
1
vote
2answers
142 views

Geocoding Address without Arc Server?

I'm helping geocode addresses, and new at it. My office does not have Arc Server, is this required? I found this conversation Address or reverse geocode a point shapefile that points me to address ...
2
votes
0answers
274 views

Generate QGIS maps automatic after updating an Access 2010 or Filemaker Pro 12 database

I want to develop a database which consist an interaction with QGIS. After updating the data in the database I want to push on a button and start a process in QGIS. After finishing the process in QGIS ...
4
votes
3answers
8k views

openlayers toggle visibility of layer

EDIT: I have cross-posted this to Drupal Answers. I hope this isn't too much against the rules --- I think the answer will be something to do with both Drupal and OpenLayers. ...
5
votes
2answers
228 views

High quality public transport trip planner examples? Trip visualization examples?

Do you know high-quality online public transport route/trip planners? I'm looking for sites with recognized usability, most carrier-owned planners are bad or very bad from Human-Computer Interaction ...
2
votes
1answer
156 views

Add table from SDE to ArcMap TOC via ArcMap python window

I would like to add a specific table or shape file to my TOC via the ArcMap python window from the SDE connection I'm currently connected to. Since I'm already connected to the SDE connection in ...
2
votes
1answer
477 views

How to clip data when using data driven pages in ArcMap 10?

I am working on a map book using data driven pages of the Silvies Valley in Northeastern Oregon. The basemap is a high resolution aerial image (raster) of Oregon with a shapefile overlay of USGS ...
6
votes
1answer
189 views

How to remove comma from combined fields which should be null?

I have Drivers License as one field and State as the other and there are to be combined and formatted as Drivers License, State. How do I handle records that do not have either a Drivers License or ...
3
votes
0answers
586 views

How do I determine appropriate Date query syntax for a layer?

I'm writing a web mapping query tool to query Esri mapservice layers by date using the REST API. It has been said that the syntax depends on what kind of database is behind the mapservice layer, as ...
2
votes
0answers
1k views

How to add multiple nested node in GeoExt

I have following codes, but i want to add severel parent>child>chill>child>child (4 level inside) nodes with all check box options (for user choice) in the tree panel, in fact sum of all these (parent ...
3
votes
1answer
859 views

Why are the features in my memory layer not displayed?

I am trying to create a memory layer, I followed the directions from the page below but no points appeared on my map. First I tried typing each line into the python console and I also create a plugin ...
4
votes
1answer
2k views

TIN Creation from 3D Contour File

I'm currently trying to import a 3D contour file into a QGIS project. How can I export the DXF file from Microstation with height information? I already have imported it to the QGIS project but ...
3
votes
1answer
265 views

How do I allow users to download a GeoTiff on my web map

I am hoping to get help with what I need to do in order to allow a user on my OpenLayers map to download a portion of a GeoTiff they are viewing through a WMS. The data is hosted through GeoServer. I ...
2
votes
1answer
526 views

Creating a quality raster map in QGIS?

I've got 2 raster maps (both with the same values: 0-100). After calculating the average I need to know how precise the map is. Is there any tool in QGis? I try to explain my problem in another ...
8
votes
2answers
673 views

PostGIS Intermittent INDEX Performance

I have a table containing approximately 55 million data points ( point is a geometry with SRID 4326 ) and for my query I need to join this to an area table ( currently have ~1800 areas ) which ...
3
votes
2answers
93 views

How to make a copy of a temp raster in QGIS?

I have a temp raster (saga raster) file. How can I make a copy of this file (like "save as")? Thank you!
3
votes
0answers
266 views

Is there a way to create raster by interpolating point values using GeoTools 8.2?

im new in using GeoTools (8.2). I was able to create shp from asc file which contains my data. Now my question is is there a simple way to create (interpolate) a simple shapefile (only points) to ...
3
votes
1answer
227 views

Determing, whether WMS service supports CQL filtering

Is it possible to query, whether WMS service supports CQL filtering (like Geoserver does) or not? I didn't find any hints from GetCapabilities query result.
3
votes
1answer
269 views

OpenLayers request tiles out of range

OpenLayers map is requesting tiles out of range and all the map is pink. If I inspect single tile, the address is next: /Tiles/15/16384/16384.png But the folder with generated tiles does not ...
3
votes
0answers
190 views

Is there a way to make a qgis project only editable by me

In QGIS, currently Lisboa 1.8.0 is there a way to make it only editable by me. I want to set up projects for each client on the network, so when all the files are on the network and the program and ...
2
votes
0answers
289 views

How to login arcgis secure service in Flex using 2.5 version?

I know, that I can use IdentityManager class to show login+password form for secured services. But it's available in version 3.0, and I'm using 2.5. How can I provide access for secured service in my ...
4
votes
1answer
2k views

Python syntax error from raster calculator in ArcGIS ModelBuilder?

I am experiencing a problem with the raster calculator in the ModelBuilder under ArcMap 10. I need to combine two layers: a drainage map (issued from a series of previous operations on a DEM) and ...
8
votes
2answers
336 views

Which Geo stack for an online strategic wargame?

I'm googling around for some weeks but I've some difficulties to figure out where to begin my project and which part of the available Geo stacks are mandatory for my needs. I have a strong Java ...
5
votes
1answer
521 views

How to connect particular sets of points with (poly)lines?

I think my problem is quite easy to be solved by the most postgis-users, but i am a bloody beginner: i have a timestamped point-table representing GPS-tracked places of different cars. To distinguish ...
7
votes
3answers
4k views

Extract raster by mask output does not completely overlap the mask

I have a flow accumulation grid and a shapefile containing catchment areas. Now I want to do some calculations on them so I need to extract data from cells in the raster adjacent to certain catchment ...
3
votes
2answers
1k views

gdal doesn´t support my *xyz file

I have just exported a tif DEM to XYZ format with SAGA GIS. When I check this with gdalinfo it states that the format is unsupported? Seeing as I converted this with saga gis which used gdal I find ...
6
votes
1answer
1k views

How can I convert a tif or xyz file to HGT?

Due to system incompatibilities between projects, I have been asked to convert my DEM which is in geotif format to HGT. I have no experience with HGT and cannot find any export options to this ...
3
votes
3answers
3k views

Creating point to center of polyline?

I'm trying to create a points in the middle of polylines. The data is now in the form of shapefile. Is there an easy way to do this?
4
votes
2answers
703 views

Is it possible to produce a decent looking shaded-relief map at 50K-scale-or-larger using SRTM3 DEM?

I'm trying to make a decent-looking shaded-relief map of a particular area in 50K-scale-or-larger using open-source tools. The best (and free) option I have for DEM data for that area right now is the ...
5
votes
0answers
126 views

Symbolizing route data [duplicate]

I'm working on a project that routes various modes of transport to one location (a school) in Arc Map 10. I have about 400 routes, so there is a significant amount of overlap as they near the school. ...
5
votes
1answer
634 views

adding multiple points to a linestring in PostGIS

Though a newbie to PostGIS, I'm having trouble solving something that I think should be farily straightforward. I have two linestring tables, both consisting of simple, 2-node line objects: one has ...
5
votes
1answer
89 views

Is there an arcpy equivalent to IPixelBlock in ArcObjects?

Trying to figure out a way of doing this via arcpy, but don't see anything remotely related to this. My raster dataset is a GRID. 'pPixBlock is an IPixelBlock 'sets raster to be one column ...
10
votes
2answers
849 views

Update database row with points that fall within polygons

I have a PostGIS/Postgresql DB that has two tables in it. One with point geometries and the other that represents country boundaries as polygons. I would like to add the country name that each point ...
3
votes
2answers
4k views

Changing infoWindow style in ArcGIS JavaScript API (v3.2)

See below a screenshot of the infoWindow's appearance in my ArcGIS JavaScript API (v3.2) application. As you can see the transparent title bar with the white buttons doesn't work too well against a ...
4
votes
1answer
2k views

Multiple leader lines on one annotation (non feature-linked)

Is it possible to link multiple leaders lines to one piece of annotation? I'm working in ArcGIS 10.2 Desktop Advanced with non-feature linked geodatabase annotation. I have hundreds of numbers ...
12
votes
2answers
4k views

ArcGIS Length and Area Calculation Scenarios [closed]

Trying to get a handle on how length and area are calculated in different scenarios in ArcGIS. I don't know why I can't find a answer on the feature class fields, but I can't find a precise answer, ...

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