Modified: 1-27-2021 Hello, we are updating some information according to your questions. Besides the generation of standard vegetation indices, the use of the index calculator allows us to generate a custom index that adapts better to their specific crop scouting or crop protection needs. Some of…

Is it possible to edit the algorithm to display the reflectance between a certain threshold? For example if i wanted to display values between 0.8 and 0.9.

Hi Jeremiah, We are coming up with that featuire very soon :slight_smile:

Hello Steve. I tried with Fields and it works perfectly. I wanted to do it with Mapper, but it didn’t recognize the Min and Max functions (or I got it wrong …). A solution available for Mapper?

Hi all, We do not have the min, max functions in Mapper. You can try using QGIS/ArcGIS on any raster calculator that has the min, max functions. I had also answered here: Pix4D indicies formula (kent index) - #2 by momtanu.chakraborty , you can have a look.

In this formula you wrote: (nir-red)/(nir+red) + 0/min(0; (nir-red)/(nir+red) - 0.4) - NDVI You used all this formula and then made it minus the NDVI? Is this correct? I am having a sintax error when copying the formula. If I erase only the “NDVI” ot Works as a formula, but does not work as a mask…

Hey, You should not minus the NDVI. I am modifying the text, so it is not confusing. Thanks so much for the feedback. Regards,

Is there a way to edit this formula to show only a specified range of vegetation? Ie.: from 0.7 to 0.9 And is there a way for doing that with the soil range also?

Gustavo, You can get the index from 0.7 to 1. Here we substract 0.4, since we are assuming the plants have NDVI value more than 0.4, so all the pixels below 0.4 are masked. If you use 0.7, the pixel value (NDVI) below 0.7 will be masked. But there is no way to change the max value. We are brining a …

The reason I am asking you that is because I would like to remove/mask some trees that are scattered acrross a crop field, and I realized they have a signature that ranges from 0.8 to 1. In this next uptade to come, will we be able to customize the range of vegetation on the zonation maps also? Thi…

Soil and plant masking w/ Pix4Dfields

Agriculture Workflow and Application

Steve_Wagner April 21, 2020, 1:25pm 4

Is it possible to do this in Pix4D Mapper or is this exclusive to fields?

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Soil and plant masking w/ Pix4Dfields

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