Thanks,

On 02/22/2013 05:17 PM, jentjr wrote:
From a comment on line 74 of main.c it looks like the accumulation map is
required when calculating the Strahler stream order.

Actually you *can* create a raster stream order map based on strahler without an accum input.
i.e.:
r.stream.order --o -a streams=str dirs=fdir elev=dtm_full strahler=str_strahler memory=1500
works fine
???
 

 in_acc_opt->key = "accum";	/* required if strahler stream order is
calculated for existing stream network */
 in_acc_opt->type = TYPE_STRING;
 in_acc_opt->required = NO;	/* for now; TO DO: is planned to be optional */
 in_acc_opt->answer = NULL;
 in_acc_opt->gisprompt = "old,cell,raster";
 in_acc_opt->description =
	"(Not recommended) Name of accumulation file (r.watershed or
r.stream.extract)";

I believe that you will need to get the accumulation map from r.watershed
first.

Hope this helps,

Justin



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Micha Silver
GIS Consultant, Arava Development Co.
http://www.surfaces.co.il
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