WHILE CALCULATION AN EXPRESSION HOW TO PERFORM SUMMATION WHICH IS NOT FOUND IN RASTER CALCULATOR.
Move to the Spatial Analyst Place in order to get an answer.
Summation is accomplished using the Plus tool in ArcToolbox, spatial Analyst Tools
Sir i mean calculation from (i=0 to m a/b)
Summation (I assume you mean adding pixel locations between rasters) in the Raster Calculator is achieved through the plus sign.
I mean summation of values from i=0 to i=24 (not simple addition).summation(sigma) is not found in rater calculator.
Their is no sigma...you either select and add the grids one at a time using the raster calculator or the Plus tool within a loop in a script that you will have to write.
it is an equation to find sediment delivery ratio ,where equation is exponential summation of length of i th cell divided by slope of the i th cell
Okay...You seem to be having an issue with my translation....so here are my comments and interpretations of what you need to do...
but after summation i will get only one value right ? i need in raster form which contain details of each cell
suppose i calculate ( length / slope) value of all cells then how i get cell by cell value as in raster form
I would search the web first using sediment yield arcmap as the search key. Anything useful has probably already been done
SIR FINAL I GOT 3 RASTER MAP FOR(P*R,C*K,TIMES).ACTUAL WHAT IT MEANS?DO I HAVE TO MULTIPLE THESE 3 TO GET FINAL VALUE?
Now let's see what you have so far in the way of a script
what about to solve this equation sir? is it possible?
sir any trail version vailable for this tool EnvSys_SoilErosion?
contact the author on their site if there is any information
well the error on the left pretty well sums it up...what is required? what does it say in the help for the tool? Is there anything on the website to describe what is needed? fill us in so we don't have to download and read it ourselves
I HAD CHECKED THE ERROR, (PARAMETER AND WORKSPACE ) BUT STILL ITS NOT WORKING SIR
You wouldn't by any chance be trying to save this to a USB drive/key would you?
SOIL EROSION VALUE IS THE RASTER WHICH MEANS TIMES?
S THIS VALUE IS SEDIMENT YIELD IN TONES/HECT/YEAR? OR ANY CHANGE IN UNITS?
The invalid output workspace might be due to the single quote in the name. Avoid any special characters in the path, don't use spaces and don't use long names. This may cause errors. Rename the folder "ALL DATA" to "ALL_DATA".
I HAD GIVEN ALL THE PARAMETER IN RATER(AS PER SPECIFIED),AND WORK SPACE IS ALSO GIVEN PROPER(CHANGED THE ALL_DATA).STILL SAME ERROR? WHAT TO DO SIR?
NO RESULTS SIR
You can just download the toolbox: http://www.envsys.co.kr/~sateec/toolbox/EnvSys_SoilErosion_Toolbox_ArcGIS_ModelBuilder.zip as stated on the website (Soil Erosion / Sediment Yield ArcGIS Toolbox Kangwon National Univ. ) and if you have Spatial Analyst, you will be able to use the toolbox. No need to have a trail version.
Do you have a D-drive in your system? Please change the output file path for each tool with valid path-names for your system, in the model-builder.
SIR D drive is not available, what to do in the edit option?can tel the steps to be done?
The issue is that the output location in the tools refer to D-drive, which is eventually not there in your system, thus the error popping up.
Go to ArcCatalog > (Locate the path of the model) > Right-click the model > Edit
In the model-builder window, double-click the tools (in orange) and define valid output file path. The default model had D-drive in path. Verify for all the tools. Also make sure you replace the DEM with the DEM file available with you. Also verify K_factor, C_factor, P_factor, and R_factor.
Let me know if the issue persists.
CHANGED EVERY OUTPUT FILE LOCATION ,STILL SHOWING SAME 2 TYPE ERROR SIR
SOIL EROSION VALUE IS THE RASTER WHICH MEANS TIME?
IS THIS VALUE IS SEDIMENT YIELD IN TONES/HECT/YEAR? OR ANY CHANGE IN UNITS?
Retrieving data ...