1

Below is the code to compute all standard metrics from R package lidR.

library(lidR)
x <- pixel_metrics(las_catalog, .stdmetrics, res = 30)

I want to compute only few pixel metrics only, like :

imean, zsd, iskew, zkurt, zpcum7, ipcumzq90, itot

Anybody got an idea on how to do this?

3
  • 1
    It is not possible. You must define your own function with your own metrics
    – JRR
    Mar 12, 2022 at 23:31
  • @JRR Thank you for clarification. Isn't grid_metrics and pixel_metrics same thing? Mar 13, 2022 at 16:32
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    pixel_metric is the new function name. If recent questions can refer to recent convention it's better.
    – JRR
    Mar 13, 2022 at 17:56

1 Answer 1

1

As JRR mentioned, define your own function. For example:

library(lidR)
f <- function(z, i) {
  list(
    mean = mean(z), 
    sd = sd(i),
    imean = mean(i))
}

m <- pixel_metrics(las, func = ~f(Z, Intensity))

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