weird range value in the colorbar, matplotlib

I am a new user to the python & matplotlib, this might be a simple question but I searched the internet for hours and couldn't find a solution for this. I am plotting precipitation data from which...

Plotting a smooth curve in matplotlib graphs

I am reading a netcdf file using python and need to plot a graphs using matplotlib library in python. The netcdf file is containing 3 variables: u v and w components. I have to draw these 3...

netcdf4-python: memory increasing with numerous calls to slice data from netcdf object

I'm trying to read data slices from a netcdf4 file using netcdf4-python. This is the first time using python and I am running into memory issues. Below is a simplified version of the code. On each...

Converting ascii file to netcdf using python

I would like to add all the data from an ascii file to a netcdf file. The ascii file has data for every 0.25 degree cell on earth. I am able to create all the lat/lon dimensions but not able to...

Programmatically list all variables of a NetCDF file using netCDF4 and Python

How do I programmatically list all variables of a NetCDF file that I have read in using netCDF4 and Python? import netCDF4 dset = netCDF4.Dataset('test.nc')

How to unmask netcdf in Python

I am opening a NetCDF file in Python, as a file object. However, when I want to check the data and put the variables in a list, it shows that the values are masked! How do I unmask them? The code...

How to create a netCDF file with python netCDF4?

I am learning how to use netCDF4 using Python module in Anaconda. I am trying to append values to two variables I have created time and field: from netCDF4 import Dataset import numpy as...

Convert ASCII File to netCDF using Python (selective columns from ASCII file)

Firstly I am new to this forum so please excuse as to any mistake I am doing in posting here. I would be glad if you could point me my mistakes out and I will make sure I don't repeat them when I...

Change _FillValue in netCDF file

Is there a python netCDF4 command/example to change the global metadata _FillValue in a netCDF file? I have tried replacing all -ve values in a netCDF file, but till the time the _FillValue...

Convert NetCDF file to CSV or text using Python

I'm trying to convert a netCDF file to either a CSV or text file using Python. I have read this post but I am still missing a step (I'm new to Python). It's a dataset including latitude,...

Convert hdf5 to netcdf4 in bash, R, python or NCL?

Is there a quick and simple way to convert HDF5 files to netcdf(4) from the command line in bash? Alternatively a simple script that handle such a conversion automatically in R, NCL or python ?

NetCDF: How can I script plotting at each time step?

I would like to create plot images from a NetCDF at each time step. My NetCDF files look like this: netcdf file:/C:/home/data/cmorph/test/reduced_cmorph_adjusted_spi_pearson_01.nc { dimensions: ...

NetCDF: How to mask/filter out non-land values in global dataset, preferably using Python and/or NCO?

I have a global data at 0.25 degree resolution that I'd like to mask so that it only contains data values over land. The data covers full 360 degrees in the lon dimension and from -60 to 60...

Python assign time, latitude & longitude to `Dimensions` of xarray.DataSet from netcdf file

1. I need to assign time as a Dimension to the xarray.DataSet object 2. I need to assign lat/lon as a Dimension I have downloaded vegetation health data from the NOAA FTP service here. The help...

xarray.open_mfdataset for a small subset of variables

I'm trying to read a timeseries of a single WRF output variable. The time series is distributed, one timestamp per file, across more than 5000 netCDF files. Each file contains roughly 200...

What possibilities are there for an xarray based database?

I am working a lot with geospatial data in python (mainly weather forecasts) and for this issue I am doing a lot of stuff with xarray . xarray supports conversion into hdf/netcdf files which is...

add a new variable to a netcdf file that increases with time

I want to add a new variable to an existing netcdf file which simply increases linearly with the time variable of file, that is to say, on the first time slice the variable has the number 1...

Convert NetCDF depth from Float to Double

I have a couple hundred NetCDF files that I want to process through a geospatial analysis tool, however the tool requires the depth variable to be a double, and it is currently a float. I have...

Plot NETCDF data only for the area of interest in python?

below is my code to plot data from a netcdf file. However, I can plot the data with the basemap for the whole world. I insert the xxxxxx shapefile through the basemap module and my goal is to plot...

Python - Change UTC to local time in netCDF file

I'm working with ERA5 land hourly data from ECMWF, which contains climatic variables. The general aspect of the file is: 'era5-hourly-2m_temperature_firstfourdays-january_2017.nc' Dimensions: ...

Using Python modules in Swift and Pythonkit

I was looking to get some help or clarification of the limitations of using PythonKit in Swift. Well I say PythonKit, I actually installed the Tensorflow toolchain in Xcode as I couldn't get...

Regrid Netcdf file in python

I'm trying to regrid a NetCDF file from 0.125 degrees to 0.083-degree spatial scale. The netcdf contains 224 latitudes and 464 longitudes and it has daily data for one year. I tried xarray for it...

how to read S3 files in lambda using Xarray?

I am trying to read netCDF files placed in my S3 bucket, I am using Xarray to read the files. Below sample code runs fine, if I have the same file in my local folder like...

Install R 3.x via homebrew

The R formula https://github.com/Homebrew/homebrew-core/commits/master/Formula/r.rb was upgraded from version 3.6.3 to 4.0 semi-recently. There are a few backward-incompatible changes in version...

Access variables in nested group in netcdf file (file format HDF5)

I'm trying, without success, to access the object 'latitude' in a NETCDF4_CLASSIC file, with python and the netcdf4 library. When I open the file: ncFile = '/path/to/file.nc4' f =...

Compressing a netCDF file with the pynco package

I'm interested in compressing a NetCDF file in python using the pynco package. In NCO, I would use: nccopy -d 3 input_file.nc output_file.nc In python, I have tried the following: from nco import...

Averaging multiple netCDF4 files with python

I am a bit of a netCDF in python noob so please excuse this noob question. I have a folder filled with circa 3650 netCDF4 files. One file per day for a decade. the niles are named yyyymmdd.nc...

How to set boundaries for grid data in Python? (netCDF file format)

I am working on a school project with a netCDF file format and need your help/advice. Let's say there are variables such as latitude, longitude and NO2 (nitrogen dioxide) in my netCDF...

Efficient way to extract data from NETCDF files

I have a number of coordinates (roughly 20000) for which I need to extract data from a number of NetCDF files each comes roughly with 30000 timesteps (future climate scenarios). Using the solution...

No module named 'netCDF4'

I am currently working with netCDF data in the Spyder IDE, however when I try to import 'Dataset' from the module from netCDF4 import Dataset it is giving me the following error: "No module...