visa
This R package is to facilitate Vegetation Imaging Spectroscopy Analysis (VISA).
For more details of this package, you can browseVignettes("visa")
.
Installation
install the released version from CRAN:
The very first version of visa (0.1.0) is on CRAN.
install.packages("visa")
You might encounter problem of package dependencies, such as some functions
depend on ggplot2
, ggpmisc
. In such cases, you would have to install all
the dependencies.
install the dev-version from GitHub:
The current version on GitHub is v1.0.0.
if (!require("devtools")) install.packages("devtools")
devtools::install_github("kang-yu/visa")
- The v1.0.0 requires support for interactive plotting. Installation on Max OS may
cause error X11 library is missing.
Usage
library(visa)
data(NSpec.DF)
x <- NSpec.DF$N # nitrogen
S <- NSpec.DF$spectra[, seq(1, ncol(NSpec.DF$spectra), 10)] # resampled to 10 nm steps
cm.nsr(S, x, cm.plot = TRUE)
Bug report
You can report your issues of using visa here. Don't know how to report a bug? Check RStudio's Instructions on Writing Good Bug Reports.
You might find useful information by checking the issues reported by others.