Specify a Data Element, Read, and Plot its Data

There are two ways to specify a data element to CUPLOT. One is to enter the shot number and data element name. This method is simpler for accessing single data items and is decribed in the next several sections. The other way is to use the ``Define Curve'' commands described in section 3.13.

SH

sets the shot number, Snap or Globe shot-try, or Transp run-id.   

DE

sets the data element name(s).    A data element is a specific chunk of TFTR data; e.g., a single Y-vector vs a single X-vector.

DI

sets the digraph for raw data and results files. A digraph of ``S'' selects Snap data, ``G'' selects Globe, and ``Tyy'' selects a Transp run made in 19yy.   

GO

reads and plots the data.   

R

reads the data without plotting it.   

P

plots the data you have previously read or calculated.   

It makes no difference whether you enter the SH command first or the DE command.

 
	SH 55806			!shot number 55806

	DE MB-IP-SL ;			!plasma current waveform

	GO				!read and plot

	

	DE MB-IP-SL ;

	SH 55806

	GO

 
Figure 1: Plasma current waveform

You can change just the shot or just the data element to access different data:

 
	SH 55806

	DE MB-IP-SL ;

	GO

	

	SH 55805			!change just the shot number

	GO

	

	DE D-PTOT ;			!change the data element

	GO

CUPLOT always reads all the data for the element(s) specified, even if there is a view window in effect that selects only a subset of the data. Since reading the data can take a substantial amount of time (and other computer resources), you should avoid rereading the data if you only want to change the view window or other aspects of the plot appearance.

 
  Slow:

			SH 55806 DE NB-BP-SL;

			GO

			XT 3 5			!change view window

			GO				!unnecessary read

			

  Faster:

			SH 55806 DE NB-BP-SL;

			GO

			XT 3 5			!change view window

			P				!replot