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Geospatial Modeller and Programmer

Remote sensing (LiDAR, RADAR), geomorphology, programming (Python, .NET (ArcObjects), C).


Jan
11
comment How to select specific row in attribute table using ArcPy (without iterating through whole table)?
You're right - I've updated the answer for clarity.
Jan
11
revised How to select specific row in attribute table using ArcPy (without iterating through whole table)?
added 108 characters in body
Jan
11
answered How to select specific row in attribute table using ArcPy (without iterating through whole table)?
Jan
9
answered How to set up a public facing server?
Jan
9
comment online free tutorial in Introduction to GIS
The second item @SaultDon lists (A Gentle Intro...) is an excellent resource for beginners and it provides both theory and practical examples in QGIS. It's an open document and I've used it to aid in teaching beginner workshops in the past.
Jan
9
answered Finding percentage of feature in a raster
Jan
8
comment Creating a Simple, Free Web Mapping Application
Have you tried searching this site already? There are several questions that directly relate to this topic. If so, what options have you explored already? What would the goal/audience of your first web map be?
Jan
8
answered Leaflet.js and CartoDB.js event conflict
Jan
7
comment Why does Topo to raster tool stall in ArcMap 10.1?
It's possible that your running into memory issues. From the help: "Topo to Raster is a memory-intensive application and it is therefore not possible to create large output rasters. When large output is required, use the MARGIN parameter." I might suggest increasing your output cell size and testing that.
Jan
2
answered Some remote sensing tutorials
Dec
20
reviewed Approve suggested edit on Formula for coordinates (lat, lon), azimuth and distance.
Dec
20
revised application of gis in geology
deleted 12 characters in body
Dec
20
comment Check for overlaps in polygons
Do you really want the single quotes and space within ' 74073'?
Dec
18
answered Conversion of raster to polygon
Dec
18
answered R - How to sampleRandom() from large raster without NA values
Dec
18
comment Longest slope oriented to north?
An analysis of aspect will provide you with all of your north-facing slopes, and an analysis of slope will allow you to find areas of elevation change. You'll need to define what your slope criteria (e.g. anything > 0degrees).
Dec
18
comment Do ModelBuilder or Geoprocessing tasks run slower if screen locked?
Locking the desktop shouldn't have any effect on any processing taking place. You can test this by viewing your Task Manager performance when locked and unlocked.
Dec
18
comment Do ModelBuilder or Geoprocessing tasks run slower if screen locked?
Are you referring to locking Windows desktop via Ctrl+Alt+Delete --> Lock?
Dec
18
answered Is setting the env.workspace var necessary for python add-in buttons in ArcMap?
Dec
17
comment Can't get simple map to show up on my test site using CartoDB
You can add a couple additional functions to your createVis function. 'The createLayer and createVis functions returns two important events for you to take advantage of: the first is done, which will let your code know that the library has successfully read the information from the Viz JSON and loaded the layer you requested. The second is ‘error’, which lets you know something did not go as expected when loading a requested layer.' developers.cartodb.com/documentation/cartodb-js.html#sec-3-1