Re: [GRASS-user] r.soils.texture question

[Gianluca Massei]

yes, of course!
GM

Il giorno gio 25 giu 2020 alle ore 09:51 Laura Poggio <
laura.pog...@gmail.com> ha scritto:

> Hi Gianluca,
> thanks for the explanation. It was very useful. Thanks to your
> explanations I managed to modify the DAT file to reproduce the USDA-NRCS
> texture triangle
> . We
> are doing some final checks. After that, if you are interested, I can share
> the DAT file.
>
> Thanks a lot!
> Laura
>
> On Fri, 12 Jun 2020 at 22:27, Gianluca Massei <
> agr.gianluca.mas...@gmail.com> wrote:
>
>> *.dat files are derived from  TALCPP (
>> https://www.tandfonline.com/doi/abs/10.1081/CSS-120017410). The values
>> describe polygons coordinates for different class inside the texture
>> triangle. In r.soils.texture is implemented an algorithm to check if a
>> single point is inside or outside a texture polygon. If the point is
>> inside it is labeled with the correspondent texture code and used to build
>> a texture map.
>> By
>>
>> Il giorno ven 12 giu 2020 alle ore 08:10 Laura Poggio <
>> laura.pog...@gmail.com> ha scritto:
>>
>>> Dear all,
>>> I am looking at the DAT file
>>> 
>>> for USDA soil texture classification for the r.soil.texture addon.
>>> I have a couple of questions.
>>>
>>> 1) the class silt-loam appears twice (number 8 and 12). Is this
>>> intentional and needed for the calculations?
>>>
>>> 2) Could you please explain the structure of the DAT file? As example
>>> 1
>>> 6
>>> 0 0 20 45 45 0
>>> 100 60 40 40 55 100
>>>
>>> First line: I think is the class value as written in the pixel.
>>> Second line: not sure
>>> Following two lines: I think they are somehow the limits of sand, silt
>>> and clay. However I can not really understand in which order.
>>>
>>> Thank you very much in advance
>>> Laura
>>>
>>> ___
>>> grass-user mailing list
>>> grass-user@lists.osgeo.org
>>> https://lists.osgeo.org/mailman/listinfo/grass-user
>>
>>
>>
>> --
>> Dott. Gianluca Massei, PhD
>>
>

-- 
Dott. Gianluca Massei, PhD
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Re: [GRASS-user] r.soils.texture question

[Laura Poggio]

Hi Gianluca,
thanks for the explanation. It was very useful. Thanks to your explanations
I managed to modify the DAT file to reproduce the USDA-NRCS texture triangle
. We are
doing some final checks. After that, if you are interested, I can share the
DAT file.

Thanks a lot!
Laura

On Fri, 12 Jun 2020 at 22:27, Gianluca Massei 
wrote:

> *.dat files are derived from  TALCPP (
> https://www.tandfonline.com/doi/abs/10.1081/CSS-120017410). The values
> describe polygons coordinates for different class inside the texture
> triangle. In r.soils.texture is implemented an algorithm to check if a
> single point is inside or outside a texture polygon. If the point is
> inside it is labeled with the correspondent texture code and used to build
> a texture map.
> By
>
> Il giorno ven 12 giu 2020 alle ore 08:10 Laura Poggio <
> laura.pog...@gmail.com> ha scritto:
>
>> Dear all,
>> I am looking at the DAT file
>> 
>> for USDA soil texture classification for the r.soil.texture addon.
>> I have a couple of questions.
>>
>> 1) the class silt-loam appears twice (number 8 and 12). Is this
>> intentional and needed for the calculations?
>>
>> 2) Could you please explain the structure of the DAT file? As example
>> 1
>> 6
>> 0 0 20 45 45 0
>> 100 60 40 40 55 100
>>
>> First line: I think is the class value as written in the pixel.
>> Second line: not sure
>> Following two lines: I think they are somehow the limits of sand, silt
>> and clay. However I can not really understand in which order.
>>
>> Thank you very much in advance
>> Laura
>>
>> ___
>> grass-user mailing list
>> grass-user@lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/grass-user
>
>
>
> --
> Dott. Gianluca Massei, PhD
>
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Re: [GRASS-user] r.soils.texture question

[Gianluca Massei]

*.dat files are derived from  TALCPP (
https://www.tandfonline.com/doi/abs/10.1081/CSS-120017410). The values
describe polygons coordinates for different class inside the texture
triangle. In r.soils.texture is implemented an algorithm to check if a
single point is inside or outside a texture polygon. If the point is
inside it is labeled with the correspondent texture code and used to build
a texture map.
By

Il giorno ven 12 giu 2020 alle ore 08:10 Laura Poggio <
laura.pog...@gmail.com> ha scritto:

> Dear all,
> I am looking at the DAT file
> 
> for USDA soil texture classification for the r.soil.texture addon.
> I have a couple of questions.
>
> 1) the class silt-loam appears twice (number 8 and 12). Is this
> intentional and needed for the calculations?
>
> 2) Could you please explain the structure of the DAT file? As example
> 1
> 6
> 0 0 20 45 45 0
> 100 60 40 40 55 100
>
> First line: I think is the class value as written in the pixel.
> Second line: not sure
> Following two lines: I think they are somehow the limits of sand, silt and
> clay. However I can not really understand in which order.
>
> Thank you very much in advance
> Laura
>
> ___
> grass-user mailing list
> grass-user@lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/grass-user



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Re: [GRASS-user] r.soils.texture question

[Firman Hadi]

Dear Laura,

I am sorry if I jump to your message without answering your question 
Are you the author of this paper, "Modelling the extent of northern peat soil 
and its uncertainty with Sentinel: Scotland as example of highly cloudy region"?
Thank you.
Best regards,
Firman Hadi

E: firmanh...@me.com 
(https://link.getmailspring.com/link/f397c403-342e-460f-84ec-cb2076c48...@getmailspring.com/0?redirect=mailto%3Afirmanhadi%40me.com=Z3Jhc3MtdXNlckBsaXN0cy5vc2dlby5vcmc%3D)
P: +6281220001994 (tel:+6281220001994)
W: http://firmanhadi.github.io 
(https://link.getmailspring.com/link/f397c403-342e-460f-84ec-cb2076c48...@getmailspring.com/1?redirect=http%3A%2F%2Ffirmanhadi.github.io=Z3Jhc3MtdXNlckBsaXN0cy5vc2dlby5vcmc%3D)

On Jun 12 2020, at 1:10 pm, Laura Poggio  wrote:
> Dear all,
> I am looking at the DAT file 
> (https://link.getmailspring.com/link/f397c403-342e-460f-84ec-cb2076c48...@getmailspring.com/5?redirect=https%3A%2F%2Fsvn.osgeo.org%2Fgrass%2Fgrass-addons%2Fgrass7%2Fraster%2Fr.soils.texture%2Fscheme%2FUSDA.dat=Z3Jhc3MtdXNlckBsaXN0cy5vc2dlby5vcmc%3D)
>  for USDA soil texture classification for the r.soil.texture 
> (https://link.getmailspring.com/link/f397c403-342e-460f-84ec-cb2076c48...@getmailspring.com/6?redirect=http%3A%2F%2Fr.soil.texture=Z3Jhc3MtdXNlckBsaXN0cy5vc2dlby5vcmc%3D)
>  addon.
> I have a couple of questions.
>
> 1) the class silt-loam appears twice (number 8 and 12). Is this intentional 
> and needed for the calculations?
>
> 2) Could you please explain the structure of the DAT file? As example
> 1
> 6
> 0 0 20 45 45 0
> 100 60 40 40 55 100
>
>
> First line: I think is the class value as written in the pixel.
> Second line: not sure
> Following two lines: I think they are somehow the limits of sand, silt and 
> clay. However I can not really understand in which order.
>
> Thank you very much in advance
> Laura
>
> ___
> grass-user mailing list
> grass-user@lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/grass-user

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[GRASS-user] r.soils.texture question

[Laura Poggio]

Dear all,
I am looking at the DAT file

for USDA soil texture classification for the r.soil.texture addon.
I have a couple of questions.

1) the class silt-loam appears twice (number 8 and 12). Is this intentional
and needed for the calculations?

2) Could you please explain the structure of the DAT file? As example
1
6
0 0 20 45 45 0
100 60 40 40 55 100

First line: I think is the class value as written in the pixel.
Second line: not sure
Following two lines: I think they are somehow the limits of sand, silt and
clay. However I can not really understand in which order.

Thank you very much in advance
Laura
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