The act or process of planning or writing a computer program.
1
vote
1answer
17 views
How to add a polygon from GeoJson into Leaflet?
I try to use the following function to add polygons to my Leaflet map.
function polygon(geojson)
{
alert(geojson); // alert for testing
layer = L.geoJson(geojson);
layer.addTo(map);
}
...
7
votes
1answer
114 views
Instructor led Web mapping development courses?
Hey guys I have been messing around with programing for a while now and have gotten proficient with Python and have some interest in HTML 5 and Javascript. I have recently received a request for an ...
4
votes
1answer
89 views
Learning resources for beginning differential topology for a programmer?
With this question I'm looking for suggestions about how and where to start learning differential topology starting from a good base of linear algebra and geometry, also consider that this know-how is ...
2
votes
0answers
60 views
Custom python datasource to QGIS
I'm working on a homebrew spatial feature data format, and using Python to write it's API.
It occoured to me that use some tool like QGIS to display my data would be very nice to have, for debug/test ...
5
votes
1answer
108 views
Grid Analysis from samples data
I'm trying to analyze set of samples into vector grids in order to generate average data in corresponding grid.I'm working with 50m separated grids but the size of grid may change over time.That's why ...
2
votes
1answer
47 views
Should I use thread lock when implementing Enabled void in ArcGis Command?
I've noticed that that ArcGis Commands are activated asynchronously. So I supposed that there is a chance to corrupt memory without using thread locks when overriding Enabled void of custom ArcGis ...
2
votes
1answer
31 views
Is it better to define object properties or layer properties?
I have a question, but it is difficult to phrase. I am picking up GIS methods as I go, and I have run into this problem frequently. Please excuse me if I am in the wrong place.
When organizing ...
1
vote
1answer
32 views
Prompting Dialogue Box to Have User Enter Information? Without ArcGIS Engine maybe?
Working with the ArcGIS family v10.1 on Windows 7.
So, I have this vision for a GIS project that does the following:
User opens up ArcGIS Explorer (ideally) or ArcMap (still fine), or I guess even ...
1
vote
1answer
84 views
Undefined reference errors installing GRASS addon
I am trying to install the r.geomorphons GRASS addon (available from http://sil.uc.edu/pdfFiles/jarek/r.geom.zip) in GRASS. I tried on Windows but gave up and decided the best thing to do was to try ...
5
votes
2answers
539 views
Generating GeoJSON with Python
Hi I want to programatically create a GeoJSON file using polygons from a shapefile but adding attributes from my own application.
This is easily done for a shapefile:
def ...
2
votes
2answers
115 views
Insert a loading message into DataGrid
I'd like to show a loading message (Loading...) that shows while the datagrid is being populated.
It would show when the search button is clicked and disappear when the grid results have populated.
...
7
votes
3answers
394 views
Map Application Requires Refresh to Initialize
I tried this question over on StackOverflow but didn't get any answers. Hoping you all might be able to help.
Creating a web mapping application in Javascript/Dojo:
When I load the app in a browser ...
0
votes
0answers
88 views
GIS Programmer/Developer [duplicate]
I have already used Quantum GIS and ArcGIS for quite some time now and I think I'm already knowledgable in using it. Now, I want to learn GIS programming and developing (scripts, python). Can anyone ...
2
votes
2answers
250 views
[R]Function to calculate mean for missing or NA values in a dataframe
I am trying to develop a function that will calculate a mean lat/long for my missing or zeros location (lat/long) data in my dataset.
I have locations for many SETS within the same TRIP, which tends ...
1
vote
0answers
44 views
Delphi coders: what features should a GIS d/b interface VCL component have?
If someone were to implement a VCL component to interface Delphi applciations with GIS databases such as PostGIS and Spatiallite, what features and functionality would be "must have" and "nice to ...
