Working with graphical output

You have seen already how to visualise outputs

Output formats

All graphical output formats are generated through Magics. Detailed descriptions of the output formats and their settings can be found in the Magics reference documentation.

The table below gives

Exporting from the plot window

Whenever you have a plot window open you are able to export the plot into other file formats. You can either select the export button in the menu (looks like a disk)

  , by selecting File > Export  or by using the Ctrl+s keyboard shortcut.

You will get a dialogue as shown below

Exercises

1. Try to save your plot as a PDF.
2. Try to save your plot as a SVG without and with fixed dimensions.
   
   1. Open both files in Firefox and see how the plots behave when you resize the browser window.
   2. Open one of the SVGs in inkscape and edit the images (for example add some text) and save it as a PDF.

Setting output formats in macro code

output_common = ( 
      output_name            : "/tmp/myOutputTest",
      output_width           : 1000,
      output_title           : "Map of Z500",
      output_debug           : "ON",
      output_filelist        : "ON",
      output_filelist_name   : "/tmp/filelist.txt"
)

ps = ps_output(
      output_common,
      output_ps_scale        : 0.9,
      output_ps_colour_model : "CMYK"
)

png = png_output(
      output_common,
      output_cairo_transparent_background : "ON"
)

svg = svg_output(
      output_common,
      output_svg_fix_size : "ON",
      output_svg_meta     : "Metview map of Z500",
      output_svg_desc     : "This file was generated for the Training course"
)

kml = kml_output(
      output_common,
      kml_description : "This file was generated for the Training course",
      kml_author      : "Stephan Siemen",
      kml_link        : "http://www.ecmwf.int",
      kml_latitude    : 30,
      kml_longitude   : 120,
      kml_coastlines  : "ON"
)

output_drivers = [ps, png, svg, kml]

setoutput(output_drivers)

data = read("z500.grib")

plot(data)

KML as output format

KML is a very special output format. It contains the    it has no notion of output size.

Converting Geopoints to KML

Metview allows

Importing graphical layers through OGC Web Map Services (WMS)

Metview provides a WMS (Web Map Service) module which can be used to query an OGC-compliant WMS server, retrieve maps from it and overlay them with other data. The following material describes the use of WMS within Metview.

• WMS Tutorial : mv_wms_tutorial.pdf
• Files required for the WMS tutorial: wms_tutorial.tar