Skip to main content
whuber's user avatar
whuber's user avatar
whuber's user avatar
whuber
  • Member for 13 years, 8 months
  • Last seen this week
972 votes
Accepted

Measuring accuracy of latitude and longitude

165 votes
Accepted

Algorithm for offsetting a latitude/longitude by some amount of meters

132 votes
Accepted

How much math does a GIS Analyst need to know?

117 votes

Difference between projection and datum

105 votes
Accepted

How accurate is approximating Earth as sphere?

103 votes
Accepted

Why is the 'straight line' path across continent so curved?

98 votes
Accepted

What is Lanczos resampling useful for in a spatial context?

55 votes
Accepted

Why is law of cosines more preferable than haversine when calculating distance between two latitude-longitude points?

55 votes
Accepted

Generating random locations nearby?

54 votes

Finding minimum-area-rectangle for given points?

52 votes
Accepted

One dimensional map of the world?

50 votes
Accepted

Meaning of Simplify's tolerance parameter

47 votes
Accepted

Calculating average width of polygon?

46 votes
Accepted

Finding center of geometry of object?

44 votes

Deciding what interpolation method to use for resampling raster data?

42 votes
Accepted

What is approximate error of Pythagorean Theorem vs. Haversine Formula in measuring distances on sphere at various scales?

41 votes
Accepted

Why do we use the terms “longitude” and “latitude” for a spherical body?

40 votes
Accepted

Coordinate system for accurately calculating areas of polygons that cross UTM Zones?

39 votes
Accepted

Benefits of Multipart Features?

38 votes
Accepted

Smoothing polygons in contour map?

36 votes

How to build an artificial 'dam' across a river?

36 votes
Accepted

Dividing polygon into specific sizes using ArcGIS Desktop?

36 votes
Accepted

Calculating areal distortion outside UTM zone?

35 votes
Accepted

Trilateration algorithm for n amount of points

34 votes
Accepted

Understanding terms in Length of Degree formula?

34 votes
Accepted

Comparing two spatial point patterns?

33 votes
Accepted

What raster smoothing/generalization tools are available?

32 votes
Accepted

Using SRTM Global DEM for Slope calculation

31 votes
Accepted

How can I generate irregular grid containing minimum n points?

31 votes
Accepted

Are there any general rules of thumb for selecting a transformation for Georeferencing?

1
2 3 4 5
20