3,207 reputation
417
bio website barry.rowlingson.com
location Lancaster, United Kingdom
age 48
visits member for 3 years, 7 months
seen 10 hours ago

Here I am.


Apr
15
answered Seeking Shapefiles of Restaurants in South Florida?
Apr
15
awarded  Nice Answer
Apr
7
revised How to shrink polygon on two sides?
added simple example to address comment
Apr
2
answered How to shrink polygon on two sides?
Apr
1
comment How to shrink polygon on two sides?
There's another complication. Are these in lat-long? Are they "large"? Are they rectangles in lat-long, and hence not really rectangles? Hmmm
Apr
1
comment How to shrink polygon on two sides?
Also, your "one third of the width" isn't too clear. Is the red section the same width as each of the blue sections?
Apr
1
comment How to shrink polygon on two sides?
Can you provide a sample shapefile/other file format with a few features in?
Apr
1
comment How to shrink polygon on two sides?
How do you decide which sides are the "sides" and which the "ends"? Is it always going to end up with a red section more vertical than horizontal?
Feb
24
comment Convert from eastings and northings to latitude and longitude without ArcGIS
Does the shapefile come with a .prj file (along with the .shp, .shx and .dbf)? That should definitively define the projection. Also, why not give QGIS a try?
Feb
20
answered How to get an indication of how points are spatially distributed?
Jan
25
comment On install “Couldn't load SIP module.” - should I reroute Python config or download sip?
That's quite an old Qgis - 2.0 is a lot newer and nicer. I'd suggest updating to the latest version from the ubuntugis repository.
Jan
25
comment convert data.frame with no lat-long info to a raster
If its just an adjustment to your question you should edit your question above rather than add an answer below - unless you are really answering your question!
Jan
25
answered How to create a multi-colored raster image based on long,latt,color information?
Jan
25
comment Is there a good free Flat style map tile available?
By the time you've built your website, I reckon flat design won't be trendy any more... It's so 2013.
Jan
22
comment How to calculate position in a picture based on latitude/longitude
Just to clarify, your lat-long grid in your picture is a plane heading off to the horizon? In which case I think its impossible without knowing the field of view of the lens, and possibly other lens/view parameters too.
Jan
22
comment Why mobile routing is so fast?
Have you tried various things? eg: gis.stackexchange.com/questions/16886/…
Jan
22
comment Why mobile routing is so fast?
Does your mobile app have a simpler data set than your pgRouting data? Or maybe you need some optimisations/spatial indexing. Oh well...
Jan
22
comment Why mobile routing is so fast?
Because your mobile routing is being done on google's cloud (or similar infrastructure)? Could your 'robust PC' search something the size of the internet as quickly as google?
Jan
22
answered convert data.frame with no lat-long info to a raster
Jan
22
comment convert data.frame with no lat-long info to a raster
Sure you got x and y right? That's surely degrees, and x goes from -180 to 180... (longitude)