Hi
I have a raster image that ranges from 1-300 and I want to apply reclass in order to reclass this image. But I only want to change 10 values (1,10,12,15, 100, 130, 200, 230, 250,290) and the rest I want them to be Null. in the rules file, shall I include the rest of the values and attribute them the null() value or what shall I do?
THanks
Kat
katrin eggert wrote:
I have a raster image that ranges from 1-300 and I want to apply reclass in
order to reclass this image. But I only want to change 10 values
(1,10,12,15, 100, 130, 200, 230, 250,290) and the rest I want them to be
Null. in the rules file, shall I include the rest of the values and
attribute them the null() value or what shall I do?
Add the rule:
* = NULL
--
Glynn Clements <glynn@gclements.plus.com>
Ok Thanks Glynn. It worked
and in the case of pixel-value for wich I dont define any value? R.reclass attributes NULL to it?
2010/10/20 Glynn Clements <glynn@gclements.plus.com>
katrin eggert wrote:
I have a raster image that ranges from 1-300 and I want to apply reclass in
order to reclass this image. But I only want to change 10 values
(1,10,12,15, 100, 130, 200, 230, 250,290) and the rest I want them to be
Null. in the rules file, shall I include the rest of the values and
attribute them the null() value or what shall I do?Add the rule:
- = NULL
–
Glynn Clements <glynn@gclements.plus.com>
katrin eggert wrote:
> > I have a raster image that ranges from 1-300 and I want to apply reclass in
> > order to reclass this image. But I only want to change 10 values
> > (1,10,12,15, 100, 130, 200, 230, 250,290) and the rest I want them to be
> > Null. in the rules file, shall I include the rest of the values and
> > attribute them the null() value or what shall I do?
>
> Add the rule:
>
> * = NULLOk Thanks Glynn. It worked
and in the case of pixel-value for wich I dont define any value? R.reclass
attributes NULL to it?
"* = ..." sets the default rule, which applies to any value which
isn't assigned explicitly.
--
Glynn Clements <glynn@gclements.plus.com>