[Jprogramming] Output fonts

[Sherlock, Ric]

> From: David Vincent-Jones
> Sent: Tuesday, 15 June 2010 12:40
> 
> On Sat, 2010-06-12 at 16:47 +1200, Sherlock, Ric wrote:
> > Can you elaborate? If we can pinpoint what is inconsistent/confusing
> > we can try and clarify it on the wiki?
> 
> A couple of questions .... a simple plot
> 
>    pd 'reset'
>    pd 'textfont arial 40'
>    pd ? 100#100
>    pd 'show'
>    pd 'save png "/home/david/Desktop/test.png" 600 400'
> |domain error: isi_png
> |   comp=.<.{.((-.msk)#num)    ,comp
> 
> 1. Textfont 12, 20 ... 40     nothing changes on the plot or the
> printout.

Nothing changes because the textfont option applies to the text commands http://www.jsoftware.com/jwiki/Plot/Commands#DrawingCommands  not the font of the labels. There are different font options for different parts of the plot:
captionfont, keyfont, labelfont, subtitlefont, symbolfont, textfont, titlefont http://www.jsoftware.com/jwiki/Plot/Options 

> 2. 'save bmp' works just fine but not 'save png' .... why

The different file formats for the save command have different options  http://www.jsoftware.com/jwiki/Plot/Commands#Copycommands . From that page, only the 'save bmp' format takes a width and height.

   pd 'reset'
   pd 'labelfont arial 40'
   pd ? 100#100
   pd 'show'
   pd 'save png ', jpath '~temp/test.png'