I'm using ArcGIS 10 with Spatial Analyst.
I have a set of rasters (8 in total) that only every contain a 1 or a 0 for each cell. Each raster represents a different years worth of data. For arguments sake year 1 to year 8.
I can add all the rasters together which will give me a final grid with values ranging from 0 to 8. An 8 indicating that the cell was constantly 1 for the set of rasters (all years).
I would like to find out for each cell the longest consecutive number of 1's.
So for example the total grid may record for a single cell a value of say 5 but over the 8 grids that cell has the largest consecutive number of 1's equal to 3. Or another way of expressing this is for 3 years that cell was a 1 then it started to oscillate between zeros and ones.
My raster processing skills is not as hot as my vector processing skill and I have had a good look at the ESRI help file but I can't figure out how one would achieve this using off the shelf geo-processing tools?
Many thanks Duncan