Pollen count error

[Ahasanul Hoque]

Hi,

I am using fieldimageR for pollen count but getting below mentioned error message (red colored, bold, image attached):

> library(FIELDimageR) 

> library(FIELDimageR.Extra) 

> library(raster) 

> library(terra) 

> library(mapview) 

> library(sf) 

> library(stars)

 > # Uploading image 

> EX.P<-rast("P4.jpg") 

> # Reducing image resolution (fast analysis) 

> EX.P<-aggregate(EX.P,fact=4) 

> plotRGB(EX.P, r = 1, g = 2, b = 3) 

> # Using index "BIM" to remove background (above 19) 

> EX.P<-imgLAB(EX.P)

> EX.P.R1<- fieldMask(mosaic = EX.P,index = "BIM", cropValue = 19, cropAbove = T) [1] "3 layers available" 

> fieldView(EX.P.R1$newMosaic) [1] "Starting analysis ..." [1] "End!" 

> # Counting all pollens area>1000 (all sample) 

> EX.P.Total<-fieldCount(mosaic = EX.P.R1$mask, plot=T)

Error in (function (classes, fdef, mtable) : unable to find an inherited method for function ‘width’ for signature ‘"SpatVector"’

Need help to solve this.