Error in Loading .nc file in HYfO package in loadNCDF function? about hyfo HOT 11 CLOSED

Hi
Link for the sample data file "https://drive.google.com/open?id=1H3tfZFhMfRoiJy63oZiBPK7W_es-54sr"

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@lodhajyoti

Hi, by using getNcdVar, you will obtain 3 variable names, of which I think you need the "tasmax". Use "tasmax" instead of varname when loadNcdf, since varname is not a string but a vector.

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Hi
Thanks it solved my issue.I have three issue which as follows
1)How I can change the units in writeNcdf function as it is only for time units, how to give units like K for (kelvin) or C (Celsius) in our data sets.
2) How to set missing values as NA as it is taking NAN in the data sets?
3) Which is the best method for Temperature? As currently I am using qunatile mapping EQM , Is it correct ?.
Wait for a positive reply.

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@lodhajyoti

Hi,
for Q1 and Q2, it's about dataframe in R, and can be simply achieved by adding one columns in R, or replacing values in R. By googling it, I think you can find a better solution.

For Q3, please type in ?biasCorrect in R and check the documentation about different bias correction method.

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I can install getNcdfVar. I get the following message:
install.packages("getNcdfVar")
Installing package into ‘C:/Users/pc/Documents/R/win-library/4.1’
(as ‘lib’ is unspecified)
Warning in install.packages :
package ‘getNcdfVar’ is not available for this version of R

A version of this package for your version of R might be available elsewhere,
see the ideas at
https://cran.r-project.org/doc/manuals/r-patched/R-admin.html#Installing-packages
What can you please help me?

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Hi @Mulugetat, I've no idea of the package "getNcdfVar", maybe you can try to contact the author of that package?

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Thanks, Dear @Yuanchao-Xu. I went to the installation of this package after trying to read the variable name from NC climate data file this way:
> varname <- getNcdfVar(filePath)
but I'm getting this error:
Error in getNcdfVar(filePath) : could not find function "getNcdfVar"
My basic problem is this.

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Hi @Mulugetat try library(hyfo) first, then run the code above.

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Thanks, @Yuanchao-Xu.
It worked for me after loading the following 3 packages: library(hyfo), library(ncdf4) and library(R.utils)..

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I am planning to use hyfo for CMIP6 data in ncdf format. I followed the following steps as per the hyfo downscaling example:

library(hyfo)
library(ncdf4)
library(R.utils)
filePath <- system.file("extdata", "D:/CMIP6/Copernicus_EU/Precipitation/Historical/NC files/pr.nc", package = "hyfo")

but I'm getting the following error message for

varname <- getNcdfVar(filePath)
Error in nc_open(filePath) :
Passed a filename that is NOT a string of characters!

Would please help me in spotting the possible source of this error?

Thanks,

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@Mulugetat please follow instructions by ??getNcdfVar.

then print out the filePath, and compare it with yours.
That may give you some idea.

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