Legacy ImageMagick Discussions Archive

The clever script presented by Hugo Rune and approved by IM elders Anthony and Fred, is not quite so robust for me.

The original version of IM is not stated but the year was 2009. The versions I am using on Windows and Ubuntu are both:

IM 6.8.7-4 2013-10-26 Q16

a) For the -scale option, the ...

The following script appears to work OK with normal text

# Convert text in a text file to an image
#
# text2image.ksh Name.txt
#
# Produces: Nametext.png


N=$(basename $1 .txt)
M="$N""Text"
imgconvert -size 1000x1000 xc:white -font "SimSun" -pointsize 56 \
-fill black -annotate +15+80 "@$N.txt ...

The convert -debug option offers various font metrics:
convert -debug annotate xc: -font Arial -pointsize "30" \
-annotate 0 'A' null: 2>&1 | \
grep Metrics:

Using this to extract ascent, descent, height, produces:
pointsize=20 ascent=19 descent=-5 height=23
pointsize=24 ascent=22 descent=-6 ...

In another post, snibgo mentioned something of which I was not aware but is useful to know. Snibgo wrote:
"Most, if not all, settings have "+" option to set the default value."

If this is the case, then maybe `antialias' is an exception as when creating an image, the default behaviour is to ...

Thanks GeeMack - that is brilliant!
There is no doubt IM is a powerfull and intriguing bunch of software, but that implies a casual user such as myself will never completely master it.

Thanks again.

# Draw a scale with tick marks given the length and number of divisions

Thanks Snibgo for mentioning the +gravity. I have always found gravity somewhat
mysterious and +gravity is not mentioned in the IM command options web pages,
but I guess I should have thought of it as a possible cure.

Yes ...

Thanks for the info GeeMack

The script below places pre-prepared rectangles containing numbers 27-0
along a line (scale50.png) of given length at approximately(1.) equal
intervals. It works OK.

###################### script ####################################

imgconvert -size 727x20 xc:'white' scale50.png

while [ i -le 27 ...

Thanks to both snibgo and GeeMack.
Removing sed and leaving everything to IM appeals as the more `elegant' way.
I also need to become familiar with `fx'.

The following seems to work (at least with two test numerics) but it appears overly complex. Is there a better way?

# Given text of arbitary font size inside a box, find the x-position of
# the first pixel of the text

F=27

imgconvert -size 40x50 xc:none -pointsize 13 -fill black -gravity center ...

convert -debug annotate xc: -font Arial -pointsize 40 \
-annotate 0 'g' null: 2>&1 |\
grep Metrics: | fmt -w80

Metrics: text: g; width: 20; height: 46; ascent: 37; descent: -9;
max advance: 80; bounds: 2,-8 20,21; origin: 22,0; pixels per em: 40,40;
underline position: -3.39063; underline ...

Is there a script available which can extract the pixel coordinates of similar features in an image?
For example, the location of each of 20 bullet holes in a target.
djd

Thanks to snibgo and Chris for sharing insights and knowledge guiding the following.

The short answer to the "win:" problem is described in the last few lines of this post, the long answer following here,
includes how it came to be that.

Here is the "win:" line from the original delegates.xml file ...

Thanks for the help snibgo and chris (who is elsewhere).
The use of the batch file myview.bat in delegates.xml does allow "win:" to work.
The problem has been around a long time with no `fix' I have seen. So I have
created a new post to describe this fix more directly and how it arose.
The title is ...

I remain confused:

C:\>cmd /C "C:/myview2.bat" "C:/windows/TEMP/star.gif"
The filename, directory name, or volume label syntax is incorrect.

C:\>cmd /C C:/myview2.bat "C:/windows/TEMP/star.gif" % Works!

C:\>cmd /C "C:/myview2.bat" C:/windows/TEMP/star.gif % Works!

C:\>cmd /C C:/myview2.bat C ...