Converting to DSS

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07-14-2011 01:13 PM
CynthiaErhardt
New Contributor
I am trying to convert raster layers into DSS files to be used in the HEC-HMS models. The tool in arcHydro converts time series layres into DSS files, not raster layers.

Is there a program or method to convert from raster to DSS?

Thank you.
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12 Replies
estellereig
New Contributor II

Hi Sikandar Ali ! 

Did you find a way to do the conversion? 

I have prepared CN grid on arcgis (using HEC-geoHMS) but I can t find a way to convert raster to HEC-DSS.. 

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FeratÇağlar
New Contributor

Hello,

I'm having difficulty while trying to convert ascii to dss. I'm using asc2dssGrid.exe tool in order to do that.

below is my command line input

asc2DSSGrid INPUT=pre_19700101.asc DSS=Pre.dss PATHNAME=/UTM36/Ceyhan/Precip/01JAN1970:0000/01JAN1970:2400/PROJECTED/ GRIDTYPE=UTM ZONE=36N DUNITS=mm DTYPE=PER-CUM

and below is the header file of my ascii input

ncols 40
nrows 45
xllcorner 571919.145856
yllcorner 3926307.6104104
cellsize 10000
NODATA_value -9999

and below is the output of command line output of asc2dssGrid.exe

= = = GridInfo = = =
gridType: UNKNOWN
infoSize: 124
gridInfoSize: 124
startTime: 7 January 1970, 00:00
endTime: 7 January 1970, 24:00
dataUnits: mm
dataType: PER-CUM
lowerLeftCellX: 0
lowerLeftCellY: 0
numberOfCellsX: 40
numberOfCellsY: 45
cellSize: 10000

It appears to be reading grid values correctly since I get the max min values same as my input. However, definitions of gridtype and LowerLeftCellX-Y are wrong (0 in this case) or remain as UNKNOWN.

Any advice is appreciated!

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mabroukabaza
New Contributor

hi Ferat Çağlar,did you find a solution? I used: asc2DSSGrid INPUT=pre_19700101.asc DSS=Pre.dss PATHNAME=/UTM36/Ceyhan/Precip/01JAN1970:0000/01JAN1970:2400/PROJECTED/ GRIDTYPE=UTM ZONE=36N DUNITS=mm DTYPE=PER-***

but I didn't see any dss file?

any help

many thanks

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