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

2020-06-25 Thread 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 >

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

2020-06-25 Thread 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

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

2020-06-12 Thread 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

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

2020-06-12 Thread 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:

[GRASS-user] r.soils.texture question

2020-06-12 Thread 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

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

2008-07-30 Thread Moritz Lennert
Milton Cezar Ribeiro ha scritto: Back to the work, do you know where can I find a soil texture map for Brazil ? I am looking for this kind of data for species distributio modelling. Case you can help me, I will be very grateful. You can try here:

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

2008-07-30 Thread Daniel Victoria
Miltinho, While it's not a texture map, this paper has a huge soil profile database for Brasil. It was published by the people from São Paulo Univerity - Piracicaba (You know ESALQ) A National Soil Profile Database for Brazil Available to International Scientists Miguel Cooper, Lúcia Maria

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

2008-07-29 Thread gianluca massei
Hy, I'm afraid but I can't help you. But you can try r.soil.texture for your area: 1. import in grass soils sample point with sand and clay atttributes; 2. interpolate sand a nd clay surface with one algorithm available in grass (or with R interface for geostatistica analisys) 3. run

[GRASS-user] r.soils.texture

2008-07-28 Thread gianluca massei
Hy, I've upgrade the module r.soils.texture with FAO and ISSS texture scheme. You can define soil texture based on USDA, FAO and ISS triangle, from sand and clay GRID. The module is availabre for download from addons wiki . I hope anibody try it. Gianluca