Tagged Questions
0
votes
0answers
33 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.
2
votes
1answer
74 views
About regression analysis in arcgis
I'm trying to do regression analysis using a shapefile which contains dependent variable (NDVI) and explanatory variable (prec) in Arcgis. First, I run GWR analysis and then run spatial ...
1
vote
0answers
52 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
...
-2
votes
1answer
100 views
How to calculate cumulative mean in Arcgis
I'd like to get cumulative mean value from a multiband image (4 bands). How can I do it in Arcgis, ERDAS and ENVI?
Thanks in advance
2
votes
0answers
119 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
1answer
73 views
How can I multiply each band of multiband image by separate scalars?
I have an image with 5 bands.
I need to multiply each band of this image by different scalars one time
(I'm lazy to do it one by one) and then get multiband image as a output.
For example ...
0
votes
0answers
51 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
1
vote
1answer
290 views
Modelling Sea level rise scenarios for a Coastal county in ArcGIS
I am a graduate student @ Clemson University and am working on a GIS based project which is to model different sea level rise scenarios and estimate its impacts on a coastal county and to suggest ...
4
votes
1answer
265 views
Statistical analyses for survey against raster?
I am somewhat of a newbie to geostatistical analyses, but pretty
familiar with GIS and remote sensing packages. I was wondering if
anyone had suggestions on appropriate geostatistical analyses for a
...
6
votes
2answers
478 views
What are best practices to compare densities and locations between two sets of points?
I have two sets of point shapefiles. They represent two different customer groups for a retail store. Shapefile A represents online customers, Shapefile B represents in-store customers.
What I ...
7
votes
3answers
718 views
How to cluster points based on a kernel density?
I have a large dataset with 36k points representing commercial land uses, each with a field containing the square footage. I have run a kernel density analysis on this dataset, producing a raster ...
3
votes
3answers
659 views
How do you produce a output table containing distances between mineral grains at various azimuthal directions?
I am using ArcGIS 10, the newest version and I am a senior at Western Carolina University and working on my senior thesis and the data set in which I have are images of mineral thin sections all ...
1
vote
0answers
554 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" ...
4
votes
2answers
413 views
comparing two TINs
i have the following two files:
1) LiDAR las file1
2) Let's give it a name LiDAR las file2, contains the same file1 data, where number of points randomly removed.
So if file1 contains X number of ...
3
votes
1answer
1k views
rmse between two rasters step-by-step
can anyone show how to calculate the RMSE (root mean square error) between following two rasters step-by-step and discuss on the obtained results' min and max values, and how to interpret it. Thanks a ...