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Objectives

  • Set-up a cylindrical projection over the United States.
  • Apply land-sahding on the coastlines.
  • Load a grib file containing Mean-Sea level Presssure and visualise it using black isolines.
  • Load a grib file containing Precipitation  and visualise it using shading technique.
  • Add a legend.
  • Add a text.
  • Draw the position of New-York City
  • Draw a line to materialise the Xsection we are going to visualise in a next tutorial

You will need to download

 

 

First step

In order to be able to create and use Magics objects, the Magics python package has to be imported. 

Any Magics plot will be triggered using the plot command.

A basic plot  could be a geographical map, using the default projection, and the default attributes of coastlines.

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Setting of the geographical area

The Geographical area we want to work with today is defined by its lower-left corner [20oN, 110oE] and its upper-right corner [70oN, 30oE]. The Documentation can be found at here.

 

Parameters to check

subpage_lower_left_longitude

subpage_lower_left_latitude
subpage_upper_right_longitude
subpage_upper_right_latitude
Info
titleTo remember

The coordinates system is defined

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