FieldMask error

[panos pp]

Hi to all

I have this error in fieldMask (R 4.3.1).

EX1.RemSoil<- fieldMask(mosaic = EX1.Rotated, Red = 1, Green = 2, Blue = 3, index = "HUE")

Error in (function (classes, fdef, mtable)  :

  unable to find an inherited method for function ‘nlyr’ for signature ‘"RasterStack"’

Any ideas?

Thank you

[fmatias]

Hey there,

I think, it is because you are not using "terra" and function "rast" to call your data. Also, we are not rotating images anymore, in this case, if you rotate you nedd to use rast() after using fieldRotate. Could you try using the code below and follow the updated pipeline in https://github.com/OpenDroneMap/FIELDimageR

install.packages("devtools") 

devtools::install_github("OpenDroneMap/FIELDimageR") 

devtools::install_github("filipematias23/FIELDimageR.Extra")

library(FIELDimageR) 

library(FIELDimageR.Extra) 

library(raster) 

library(terra) 

EX1 <- rast("EX1_RGB.tif") 

fieldView(EX1)

EX1.RemSoil <- fieldMask(mosaic = EX1, Red = 1, Green = 2, Blue = 3, index = "HUE")

EX1.Shape<-fieldShape_render(mosaic = EX1,ncols = 14, nrows = 9) 

fieldView(mosaic = EX1, fieldShape = EX1.Shape, type = 2, alpha = 0.2)

Hope it helps,

Filipe

[panos pp]

Thanks for your immediate answer.

Now I have this error:

> fieldView(mosaic = EX1, fieldShape = EX1.Shape, type = 2, alpha = 0.2)

[1] "Starting analysis ..."

Error in viewRGB(mosaic) : could not find function "viewRGB

What could it be?

Panos

[pspawar]

This issue might be due to the mapview library not being activated by you. The viewRGB function is a part of the mapview library. To ensure the proper functioning of FIELDimageR functions, please remember to load the necessary dependencies, including FIELDimageR.Extra, raster, terra, mapview, sf, and stars. 

Step:1

library(FIELDimageR)

library(FIELDimageR.Extra)

library(raster)

library(terra)

library(mapview)

library(sf)

library(stars)

Hope it helps.

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[panos pp]

Thank you

Everything is fine now.

Panos

[fmatias]

Hi there,

Maybe you need to install mapview and mapedit package.

EX1.RemSoil<- fieldMask(mosaic = rast(EX1.Rotated), Red = 1, Green = 2, Blue = 3, index = "HUE")

Also, you do not need to rotation "EX1.Rotated" - if you want to use it please use:

Best,

Filipe

[pspawar]

Hello! The 'fieldMask' function now requires a 'spatRaster' terra object instead of a 'RasterStack.' This update is part of FIELDimageR's transition to the modern "terra" package.The updated FIELDimageR relies on the "terra" package for raster operations instead of "raster". You may need to adapt your code accordingly. Refer to the updated tutorial on: https://github.com/filipematias23/FIELDimageR.Extra for more information. If you have any questions, feel free to ask..

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