How to Get Your First DD Plot
- To create a plot select
in Welcome to DD System page and
log in (password is required). Do not press "Enter" at the end of the
your login and password. Just click
Choose
And you get a tool to compose your own plot or to generate plot according to
default requests.
- The simplest way to get your very first plot
is to use precompleted demo request as follows:
- Go directly to the third panel (DD SYSTEM Request).
Then
- Don't
consider the awfull table appeared. Go down and press
Several seconds later hopefully you'll get GIF picture in this
window.
- To get PostScript file of high quality select
The message The file IDL.PS.GZ contains the result
will apper in this window.
Download created file (gzipped PostScript) to your computer by
clicking on the file name.
- Now you can try to create your own plot.
The best way to do this is to spend 10 minutes to read
How To Use DD Web Interface .
Nevertheless, just to have a taste you may try to
compile following plot: CORALL spectrogramm (two channels),
CORALL temprature and density.
Do as follows:
- First Panel (DD System Objects)
Find the instrument and select one or several Objects:
CORALL / spectrograms : select Spectrograms
CORALL / Parameters: select Temperature and Density.
Click on
in the bottom of the panel.
- Second Panel (DD System Request Preparation)
Select the Number of Objects in the upper row of the table.
Let it be 2 (it means two different spectra)
The row looks now like that:
Click on
The third panel will be updated immediately.
- Third Panel (DD System Request)
In the last column (Arguments) of the table change default
CORALL channel number( 0 ). You can choose any number between
1 and 4.
Select Start date and time and Time interval
(We suggest just to change defail time interval up to 1 hour
for the first time). Click
or
- and be patient.
If you got an empty panel -
- Check that the
data really exists in DD for chosen time interval (Look at
Interball-Tail & Magion-4 Data Inventory Graph ).
- Check the Y Data Range to be sure
that default settings fit the real values.