how to get the values from netcdf to ascii format through matlab?

The data is in .nc form (e.g data.nc). 1) How to extract a grid from this file format? 2) How to find the values of the extracted grid in ascii form?

[Ashish Uthama]

Girija, please say more. Its hard to give a helpful answer since your question does not have enough information. For example - how is the data in the netcdf file structured? Do you have lat /lon and data. Are they 1D 2D or nD? What do you mean by ASCII form? As a variable as a CSV file a text file?

To get started, please have a look at the ncread function.

[Gargi]

Sir, data is in .nc format (data.nc) (temperature data of two years 1948-1949). Its a global data, ve to extract a grid from that data, and the value should be in ascii (csv ) form. I have to read this data and make a average of January month, February month and so on...of two years.

Sir, this data have longitude, latitude, time, and temperature of one pressure level i.e 1000.

Answer 1

[Chad Greene]

Check out the names of the variables with ncdisp('data.nc') and if one of the variables is lat, you can load it with

lat = ncread('data.nc','lat');

Then you can write variables to ascii with dlmwrite.

[Chad Greene]

It is difficult to understand your question. Try to ask a specific question about a specific step that you're having trouble with.

Answer 2

[Supreeth Subbaraya]

Take a look at the function ncread. Here you can specify the indices of the starting location of a variable and the number of elements to be read. If a variavle "var" is a two dimensional variable, then you can use the following line of code:

ncread('data.nc','var',[1, 1], [1,1])

[Gargi]

THANKUU, its working....!!