1,878 reputation
710
bio website ariasprado.name
location Spain
age 40
visits member for 4 years, 2 months
seen Jun 13 at 17:20

A not so young guy in northwest Spain working with MapServer, GeoServer, OpenLayers, GDAL, PostGIS, TileCache and related GIS stuff.


Apr
27
comment How to download new version of QGIS 2.2?
What OS? Linux, Windows, MacOs...
Jan
13
comment How to fix encoding problems with Turkish characters?
Some people has reported that his solution does not work.
Jan
13
comment How to fix encoding problems with Turkish characters?
Repeated question? Please, take a look at "How to read Greek fonts (ISO-8859-7) in shapefile attributes within QGIS 1.8.0?" (goo.gl/qqhnK).
Jan
10
comment Load and display a large number of points using openlayers
The only solution I see is that you show a raster layer (WMS, for instance) instead a vector layer. The con is that you would have to set up a WMS server (for instance with GeoServer or MapServer), or similar.
Dec
10
comment Caching / Preloading data for use with WMS queries
Perhaps you are missing two things. First, the WMS cache can be seed, by using the cache seeder application, before users use the service. Second, there is no need to 'refresh' the whole WMS cache after there is change on the geographical informations. If the changes are limited to certain geoghaphical areas, updating just the tiles corresponding to them is enough; the TileCache seeder application allows limiting the portion of WMS cache updated to a given bounding box (see goo.gl/rS1dG).
Dec
10
comment Caching / Preloading data for use with WMS queries
Broken link corrected. Thanks!
Dec
9
comment Best way to create tiles
TileCache seems stuck on version 2.11. Sometimes I wonder if it is alive, because this release has already some years. Anyway, TileCache is a great software although the seeder application has the annoyance of aborting when the cached WMS service cannot, for whatever reason, generate a requested tile; an additional problem is that you cannot tell seeder application to resume from the tile that caused it to stop.
Dec
8
comment In need of WFS-T support in a WPF/Silverlight application
As said by RomaH, Silverlight technology will not see further development. However, it seems that Microsoft will support it until 2021 (goo.gl/rhw5i). Anyway, I think that using this technology in a new development is a bad idea.
Dec
7
comment Creating a openlayers enabled web project in eclipse
As said by unicoletti, the first step would be checking that there are no syntax errors or of any other kind. In case a needed component has not been loaded, then it would trigger an error message.
Dec
6
comment Is it possible to automatically create categories with mapserver?
Scripting language is not a must, I mean, if you are already familiar with any programming language (Java, C, C#...) use it to accomplish this task. The only extra a scripting language offers for a task like this is that you would do it faster. Another way? I don't know? Recommending a programming language? I would check out the technologies and programming languages already being used at your current workplace / industry and make a choice based on that.
Dec
6
comment Is it possible to automatically create categories with mapserver?
As far as I know, it is not possible. However, given the highly regular structure of the text you would have to add to the 'mapfile', you could use your preferred scripting language (Tcl, Python, Perl...) to generate this text in a separate file and, after that, copy and paste it in your 'mapfile'.
Dec
4
comment Allowing Add/Delete/Update of features (web application): OpenLayers + WFS and GeoServer?
To the previous combination I would add PostGIS (goo.gl/rdsdT). Add/Delete/Update of features require transactional WFS (WFS-T), and GeoServer demands a PostGIS database for running a WFS-T service.
Nov
30
comment GeoServer: Show (Random?) Subset of Features
If you used WFS, you could limit the number of returned features - request GetFeature - using the parameter maxFeatures. However there is no guarantee that the returned features are uniformly or randomly distributed in the space.
Nov
26
comment Allow user to add notes to an OpenLayers map
Although HTML 5 is fine, features can also be drawn on the map by the user using HTML 4, as can be seen in this old OpenLayers example: "OpenLayers Draw Feature Example" (goo.gl/k3Dhu).
Nov
22
comment OpenLayers: how to save added point in server side
Repeated question? "How do I edit info feature attributes in geoserver with openlayer" (goo.gl/7GVbz)
Nov
22
comment How to use SLD Select control?
GetFeatureInfo allows you to get attributes - in your case, the fid - of one feature, the one the user clicks on.
Nov
19
comment OpenLayers 2.12 and http basic authentication woes
As far as I know, the only way of handling authentication in OpenLayers is using the function OpenLayers.Request.issue() (goo.gl/OKtGj), which does not suit your needs.
Nov
18
comment Should I query the tab/shp file or SQL (mapserver or geoserver)?
The WMS request GetFeatureInfo will allow getting the feature attributes at point any (x, y); other queries are not possible. No programming is required. For more complex queries you can consider using Web Feature Service (WFS), which both GeoServer and MapServer feature. About OpenLayers, it can draw polygons, no matter if you are using WMS or WFS (to learn about OpenLayers capabilities, you can see the OpenLayers examples at goo.gl/ZfVsW).
Nov
17
comment openlayers toggle visibility of layer
@canisrufus Great link about closures!
Nov
14
comment CGI mapserver with PostGIS layer: pass SQL WHERE clause in URL paramaters
The WMS GetMap request is very different from the GetFeature WFS request. WMS GetMap does not support filtering, unless the WMS server you are using supports a propietary, non-standard extension.