Linked Questions

9 votes
1 answer

Making linear regression across multiple raster layers using ArcGIS Desktop?

I have a series of 5 rasters which represent a value for 5 consecutive years. Is there a way to create a linear regression for each cell over the 5 layers and output the slope? The result would be ...
user1502898's user avatar
4 votes
2 answers

Calculating Slope Between Pixels Through Time using ArcPy?

I have a 9 year weekly time series (~500 raster grids of equal cell size and extent). I'm interested in obtaining the regression line slope between pixels (Imagine stacking all 500 grids on top of ...
TheScianceGuy's user avatar
3 votes
1 answer

How to Normalize or rescale the NDVI raster image

I have processed my landsat band 3 and band 4 of different years to derive NDVI values the possible values of Normalized difference vegetation index is -1.0 to +1.0. The bands were atmospherically ...
Waseem Ali's user avatar
2 votes
1 answer

Possible to use same signature file to classify images from different years? [closed]

I have Landsat images for the same area over 20 years (one photo per year in same season). I would like to detect changes occured in forested area like clear-cut and bark beetle outbreak over time. I ...
maycca's user avatar
  • 3,366
3 votes
2 answers

SPOT NDVI time series

I have 423 spot.vgt ndvi from first April 1998 till 31 Dec 2009. I want to know how to stack these NDVI to have one image for time series analysis? Or better to ask how is it possible to analyze a ...
user19954's user avatar
2 votes
1 answer

Using ASTER for time series analysis?

This is a follow up to Where to obtain free 15m ASTER image for New Mexico?. If I want to analyze 10 years or so, do I need to download each ASTER file for each year (e.g. 2003 ASTER, 2004 ASTER,...)...
PROBERT's user avatar
  • 4,141
0 votes
0 answers

Stretching (rescaling) Raster (NDVI) Values between -1 and 1?

I am trying to equalize NDVI values for the same area temporally. For example 2014 LS8 NDVI values between -.12 and .007 while 2011 LS5 values between -.33 and.77. I would like to equalize each raster ...
Amadeus's user avatar
  • 493
2 votes
0 answers

Change Detection ArcGIS with multiple dates

I'll explain my aim first: I am trying to create a single raster to represent vegetation resilience, I am doing this via change detection. So far I have created 5 Change detection images, where 2000 ...
Aaron Llewellyn Wade Evans's user avatar
2 votes
1 answer

Raster calculator help needed

I have time-series data (rasters) from which I need to calculate the direction of change (increase, no change or decrease) for every pixel from one time-step to the next. I further need an output ...
Yolandi's user avatar
  • 41
1 vote
0 answers

Change detection between two Landsat scenes? [duplicate]

I want to do time series analysis and find change in NDVI. I have rasters where each pixel is represented by some value at a time. Also I have same thing but represented by points. And I would like ...
ABCD's user avatar
  • 423