The field of study concerning statistical methods that use space and spatial relationships (such as distance, area, volume, length, height, orientation, centrality and/or other spatial characteristics of data) directly in their mathematical computations.
7
votes
0answers
181 views
Can I modify the Bivariate Moran's I /LISA to include self?
I am using GeoDa's Bivariate Moran's I function to examine patterns of
collocation between two variables at the county level (call them A and
B for now).
I know that, having run the analysis I can ...
5
votes
0answers
216 views
How to use ESRI's spatial statistics tools on average values?
I'm wondering if anyone can tell me whether using the spatial statistics tools such as Getis Ord Gi* "hot spot" analysis in ArcView is advisable when your input data is an averaged value, e.g. the ...
4
votes
0answers
69 views
Assigning costs to a road network : use raster or vector?
I have a road network in a PostGis database (db_routing). In another database (db_environment), I have some spatial features of the surrounding environment (trees as points and water bodies as ...
3
votes
0answers
24 views
Ways to measure similarities/congruence of tracks (point features) in ArcGIS
I have a sets of GPS coordinates recorded while tracking different cross country runners. What I would like to do is to compare how similar the tracks of the individual runners are. Is there a test ...
3
votes
0answers
80 views
How does Zonal statistics handle pixels that are on the border of the polygon?
I am using the plugin zonal statistics to calculate the sum of the raster cells within polygons. How does this plugin handle pixels that are on the border of the polygon, are those cell values ...
3
votes
0answers
97 views
How do I access layer attributes from within QGIS' manageR plugin?
This is probably a fairly basic question, but searches for manageR come up with a lot of noise, and there's no manageR tag. What I'd like to do is load the attributes from a particular field of a ...
3
votes
0answers
157 views
Equipotential Surface Generation Using Monte Carlo Simulation on Large Raster Images
All,
I have a large (1GB+) raster that I am using as the base for the generation of an equipotential surface. This is to assess the accuracy of DEMs derived from another source. In situ ...
1
vote
0answers
46 views
Plotting time-series data in ArcGIS
I'm attempting to produce interpolated plots of water quality time-series data from ArcSDE. This is the data format:
OID WELL_ID WELL_NAME SAMPLE_ID SAMPLE_DAT PARAM RESULT
...
1
vote
0answers
99 views
About zonal statistic function in ARCGIS
I calculated zonal statistic in Arcgis to get max/min value of each LC types. Broadly, LC image include forest, grassland, waterbody etc. But output max value of zonal statistic function give me 0.972 ...
1
vote
0answers
128 views
ESRI Silverlight Cartography - Looking at whats not there
I have line data that has been symbolozied in ways that I don't have time to understand and would like to make a map that tells me =).
My general question is how to display the lack of data results ...
1
vote
0answers
550 views
two results of IDW in ArcMAP are different
i added the following points to ArcMAP using "Add XY Data".
x,y,z
7,39,117
27,17,122
27,61,123
46,36,136
52,14,138
55,46,141
56,56,137
65,24,144
65,36,145
Changed raster output size in "options" ...
0
votes
0answers
26 views
Explaining the output from ArcGIS' Principal Components tool
I have completed the process but am unsure whether I am interpreting the output like I should, particularly the text file. I am especially interested in the "EIGENVALUES AND EIGENVECTORS" portion.
0
votes
0answers
44 views
Does the Calculation of Spatial Weights Matrix in ArcGIS take into account 3D?
This question is about Spatial Weights Matrix in ArcGIS. Does it take into account 3D or not?
I want to calculate Spatial Weights Matrix with SPACE_TIME_WINDOW.
Anton
