367 reputation
214
bio website N/A
location Edinburgh
age 31
visits member for 2 years, 11 months
seen Jul 10 at 15:15

Working with and discovering geo-information :)


Oct
23
comment Can I create a virtual mosaic using other virtual mosaics?
adn this is quite helpful as well, elogeo.nottingham.ac.uk/xmlui/bitstream/handle/url/226/…
Oct
22
comment Failed to create reader using geoserver Image Pyramid plug-in
I found the answer here, gis.stackexchange.com/questions/64645/… It had to do with file permissions.
Oct
3
comment Can I create a virtual mosaic using other virtual mosaics?
I am reading this at the moment - docs.geoserver.org/stable/en/user/tutorials/imagepyramid/…
Jul
12
comment Can I append to different tables using ogr2ogr?
Thanks for replying. My problem is that at the end of the command I want to be able to do something like <myschema>.<mytable1> <myschema>.<mytable2> <myschema>.<mytable3> <myschema>.<mytable4> ... because the GML contains geometries that need to be imported to different tables within the same schema. I will try the update command with the -nln and let you know!
Jul
10
comment Converting Tab to Shp Using OGR2OGR with Python on linux
also for a few examples, bostongis.com/?content_name=ogr_cheatsheet
Jul
10
comment Converting Tab to Shp Using OGR2OGR with Python on linux
check this, stackoverflow.com/questions/450285/…
Jul
10
comment How to debug third party JavaScript libraries such as openlayers?
So, does anyone have experience on having no error shown and still having no map loading?
Jul
10
comment How to debug third party JavaScript libraries such as openlayers?
I am using openlayers-2.12
Jul
10
comment How to debug third party JavaScript libraries such as openlayers?
thanks for the hints and tips. I am using leaflet as well. its giving me some trouble as well. I can use both Open layers and leaflet on simple stand alone web pages but something is going wrong when integrating into a big django project.
Jun
3
comment Is QGIS suitable to create maps with image popups?
Well, QGIS works fine with thematic mapping. You can create your map and then use the identifier to click on your marks and get data - though I am not sure you can view images.. Now, making an interactive map available in a web site is a different case. You would need to use tools such as openlayers api, geoserver, postgis etc. Not all of them necessarily. Google some info about interactive map sharing/publish etc.
Feb
8
comment Why is not ST_GeomFromEWKB() working?
Thank you for your help, it still does not really work though. What I am trying to do is get the distance from a given point to the nearest boundary. This point will always fall within a polygon - that is why I include st_boundary.
Feb
7
comment layer to KML conversion
I had some trouble converting to KML using arcmap. I found QGIS "save as KML" option to be quite handy!
Dec
11
comment What is the maximum Theoretical accuracy of GPS?
I use Arcmap to set my fixed test positions and then measure the distance from the GPS positions. The results that I stated above are average and rounded accuracy values for European countries (mostly UK, Spain and Germany )
Sep
17
comment Why does ST_Transform fail?
My postgis_full_version() - POSTGIS="1.4.0" GEOS="3.2.2-CAPI-1.6.2" PROJ="Rel. 4.8.0
Sep
17
comment Why does ST_Transform fail?
Hi, I started testing in the UK but now it has gone global so I am trying to come around this problem.
Sep
17
comment Why does ST_Transform fail?
Hi, I tried it today and it worked, then I tried it again and it did not by throwing an error like this, ERROR: AddToPROJ4SRSCache: couldn't parse proj4 string: '+proj=utm +zone=47 +ellps=WGS84 +datum=WGS84 +units=m +no_defs ': latitude or longitude exceeded limits
Sep
14
comment Why does ST_Transform fail?
i just copied it from postgresql log file in which E indicates a string if I am not mistaken..
Sep
14
comment Why does ST_Transform fail?
hi, i tried the 32647 and it still throws the same error. Thanks for your help though!
Sep
3
comment How do I use st_dwithin with meters?
Thank you for your answer. I used the functions above and they indeed return meters but i can only use them to calculate a distance between two latlong geometries and I need to use it to calculate distance from polygon edges. I thought of a solution with the above info, I could use st_closestPoint() to my polygon and then st_distance_sphere() which will do the trick. Problem is I am using postgis 1.4 and st_closestPoint() is unavailable. Also, I would like to use minimum code because ST_WDistance() will return a simple true/false whilst the other alternatives need more coding.
Mar
2
comment postgis minimum distance among many points
I found my answer here, stackoverflow.com/questions/2098186/… Thanks!