[GRASS-user] How to calculates linear regression from three or more raster maps?

GRASS GRASS user
1

Hi,all!

How to calculates linear regression from three or more raster maps （X1 = a + bX2 + cX3 +dX4 + …)?

Thanks!

Best Regard!

dehui

2

=?GBK?B?zfW1wrvU?= wrote:

How to calculates linear regression from three or more raster maps £¨X1 = a + bX2 + cX3 +dX4 + ...)?

r.series with a method of slope, offset and/or detcoeff.

--
Glynn Clements <glynn@gclements.plus.com>

3

I want to caculate linear regression function of X1 raster map to X2,X3,X4.
r.series can not do it.
Thanks!
dehui

在2013-02-22 16:02:00,王德辉<dehuiw@gig.ac.cn>写道：

=?GBK?B?zfW1wrvU?= wrote:

> How to calculates linear regression from three or more raster maps £¨X1 = a + bX2 + cX3 +dX4 + ...)?

r.series with a method of slope, offset and/or detcoeff.

--
Glynn Clements <glynn@gclements.plus.com>

4

On Fri, Feb 22, 2013 at 9:44 AM, 王德辉 <dehuiw@gig.ac.cn> wrote:

I want to caculate linear regression function of X1 raster map to X2,X3,X4.

The addon r.regression.multi (GRASS 7 only) does that [0].

Markus M

[0] http://grasswiki.osgeo.org/wiki/AddOns/GRASS7/raster#r.regression.multi

r.series can not do it.
Thanks!
dehui

在2013-02-22 16:02:00,王德辉<dehuiw@gig.ac.cn>写道：

=?GBK?B?zfW1wrvU?= wrote:

> How to calculates linear regression from three or more raster maps £¨X1 = a + bX2 + cX3 +dX4 + ...)?

r.series with a method of slope, offset and/or detcoeff.

--
Glynn Clements <glynn@gclements.plus.com>

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5

On 22/02/13 09:02, Glynn Clements wrote:

=?GBK?B?zfW1wrvU?= wrote:

How to calculates linear regression from three or more raster maps £¨X1 = a + bX2 + cX3 +dX4 + ...)?

r.series with a method of slope, offset and/or detcoeff.

Does r.series allow multiple regression ? How would you get the output of the parameters (a, b, c, d) ?

I think you need r.series.multiple from the grass7 addons for that.

Moritz

6

On 22/02/13 13:32, Moritz Lennert wrote:

On 22/02/13 09:02, Glynn Clements wrote:

=?GBK?B?zfW1wrvU?= wrote:

How to calculates linear regression from three or more raster maps
£¨X1 = a + bX2 + cX3 +dX4 + ...)?

r.series with a method of slope, offset and/or detcoeff.

Does r.series allow multiple regression ? How would you get the output
of the parameters (a, b, c, d) ?

I think you need r.series.multiple from the grass7 addons for that.

Sorry, that's: r.regression.multi.

Moritz

7

That's it.Thank you Markus!
dehui

在2013-02-22 18:27:06,王德辉<dehuiw@gig.ac.cn>写道：

On Fri, Feb 22, 2013 at 9:44 AM, 王德辉 <dehuiw@gig.ac.cn> wrote:
> I want to caculate linear regression function of X1 raster map to X2,X3,X4.

The addon r.regression.multi (GRASS 7 only) does that [0].

Markus M

[0] http://grasswiki.osgeo.org/wiki/AddOns/GRASS7/raster#r.regression.multi

> r.series can not do it.
> Thanks!
> dehui
>
> 在2013-02-22 16:02:00,王德辉<dehuiw@gig.ac.cn>写道：
>>
>> =?GBK?B?zfW1wrvU?= wrote:
>>
>> > How to calculates linear regression from three or more raster maps £¨X1 = a + bX2 + cX3 +dX4 + ...)?
>>
>> r.series with a method of slope, offset and/or detcoeff.
>>
>> --
>> Glynn Clements <glynn@gclements.plus.com>
>
>
>
>
>
> _______________________________________________
> grass-user mailing list
> grass-user@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-user