Vertical alignment of text

[Santa911]

I wish to use IM to write text (month names) on some pictures using commandlines. I would like the text to be rotated 270 degrees and placed to the left on the picture. My problem is that I can't figure out how to center the text vertically. The problem is that the lenght of the text is not the same, eg. May and September so I can't use offset.

I have no problem using the code "-gravity West" when the text is not rotated, but the text is not centered when rotated 270 degrees eg. "-annotate 270 February".

Can somebody help me with relevant code?

Lars

[Bonzo]

I would generate the text as an image and then put it on the photo. There can be a problem using -gravity on the text then locating an image using -gravity so may need to be done in two commands.

Untested and avoids using -gravity in the text generation:

Code: Select all

convert photo.jpg -gravity west ( -size 50x100 xc:none -fill black -annotate 90 "April" -trim ) -composite +repage output.jpg

[anthony]

As you are rotating all the text 270 degrees, why not just generate the text normally (center aligned or otherwise) then rotate the resulting image before overlaying on the background image.

[Santa911]

Thank you for your constructive input. I have tried to work with it, but I run into problems. The suggested commandline:
convert photo.jpg -gravity west ( -size 400x1200 xc:green -fill black -pointsize 120 -annotate 90 "September" -trim ) -composite +repage output.jpg
gives the result shown here:
http://www.dummyweb.dk/Temp/outputEx0.jpg

I have problems moving the text/image a bit further to the right. I would like to have this result (without the red color...):
http://www.dummyweb.dk/Temp/outputEx4.jpg

This however I can only get to work with this command which is not general:
convert photo.jpg -gravity west ( -size 1200x1200 xc:red -fill black -pointsize 150 -geometry -900+0 -gravity center -annotate 270 "September" -trim ) -composite +repage output.jpg

If the picture has a different size then the -geometry -900+0 is a bad solution. However I can't get this to work:
convert photo.jpg -gravity west -geometry +200+0 ( -size 1200x1200 xc:red -fill black -pointsize 150 -gravity center -annotate 270 "September" -trim )
-composite +repage output.jpg
It gives me this result:
http://www.dummyweb.dk/Temp/outputEx5.jpg

Hope somebody can help me with moving the text/picture a bit from the "west gravity"

Lars

[fmw42]

Your pointsize is too big for the size you specified. Better to let label: determine the best pointsize by only specifying one size and leaving off pointsize. Also you need to specify -gravity and -geometry after the overlay image in a convert ... -composite.

Try this and adjust the -size and -geometry to suit.


convert input ( -size 600x -background red -fill black label:"September" -rotate 90 -trim +repage ) -gravity west -geometry +20+0 -composite output


Also you might like to try this as an alternate to get the text vertically stacked using line feeds between characters.

convert input ( -size x600 -background red -fill black -gravity center label:"S\ne\np\nt\ne\nm\nb\ne\nr" -trim +repage ) -gravity west -geometry +20+0 -composite output

[Santa911]

I got it to work now with all your help.

My result for a photocalender now looks like this:

http://www.dummyweb.dk/Temp/DummyKalender2011-02.jpg

Thank you for all your help - it was very useful

Lars

[Bonzo]

Thanks for the link Lars as its good to see the final result.

[anthony]

There is a small sed-tr script in the example shown in
IM Examples, Text Handling, Vertical Labels
http://www.imagemagick.org/Usage/text/#label_vertical
which will insert a newline character between every letter. Also note the use of gravity center too.

However I see from your 'final result' that you just decided to rotate the month name, instead of using a vertical stack