[texhax] Combining symbols [picture, axis_height]

[Uwe Lück]

Back to where we started:

At 20:32 29.12.08, John Palmer wrote:
>On Monday 29 December 2008 03:54:11 Daniel Freedman wrote:
> > position a bullet over the arrowhead
>
>I have done this sort of thing by using \raisebox for vertical and \kern for
>horizontal movement, but there must be a more robust and elegant way, so I'll
>be interested in other replies !

At 15:58 04.01.09, John Palmer wrote:
>I was in a picture environment, drawing a map, and wanted to put symbols 
>centred on specified coordinates, so usually needed a shift leftwards and 
>downwards from the default position.

Until now I had understood this as if you put symbols near marks to refer 
to certain (marked) points of the diagram in the text nearby. I was about 
to explain that you could "combine" labels with marks by

     \put(<x0>,<y0>){\put(<x1>,<y1>){\makebox(0,0){<label>}}<mark>}

or more sophisticated ... This came from the thread name `Combing symbols' ...

Now however it seems to me that you don't want to combine anything, just 
center something on a coordinate. This really should not be done by 
shifting ..., but by

     \put(<x>,<y>){\makebox(0,0){<symbol>}}

or with lowercase letters perhaps, according to my previous posting,

     \put(<x>,<y>){\makebox(0,0){<symbol>\mathstrut}}

My TLC1 (German) p. 289 seems to tell me that it is standard to center 
symbols in picture environments this way (without \mathstrut).

    Uwe.