...

Next, read the forecast data for the current forecast step and the area you defined (supposing your area is called wbox):

p=read(
		data: g,
		par: "msl",
		step: i*24,
		area : wbox
		)

...

trDate = trDate & [date(val_date([i])) + hour(val_time([i)])]

Having finished the body of the loop the last step is to define an Input Visualiser and return it. The code you need to add is like this:

...

• the line thicker
• the points to be blue filled circles (their marker index is 15) with a reasonable size.

Creating a title

Define a custom title to the plot with a new Text Plotting icon.

Putting it all together

With a new Display Window icon design an A4 portrait layout with two views: your Geographical View icon should go top and your Cartesian View icon into the bottom. Now visualise your icon and populate the view with the data.

...