imagemagick - N PNG files to one PDF file: keep duplex information -


i converting n png files 1 pdf file. works great convert image magick:

convert front1.png back1.png front2.png back2.png result.pdf

here simple ascii art illustrate this:

+-------------------+   +-------------------+          |                   |   |                   |          |                   |   |                   |          |     front-1       |   |     back-1        | |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          +-------------------+   +-------------------+              +-------------------+   +-------------------+          |                   |   |                   |          |                   |   |                   |          |     front-2       |   |     back-2        |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          +-------------------+   +-------------------+

sometimes back-side missing, keep duplex information.

case1: first backside missing:

convert front1.png front2.png back2.png result.pdf

if gets printed on duplex printer, result be:

+-------------------+   +-------------------+          |                   |   |                   |          |                   |   |                   |          |     front-1       |   |     front-2       |  |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          |                   |   |                   |          +-------------------+   +-------------------+              +-------------------+          |                   |          |                   |            |     back-2        |             |                   |         |                   |       |                   |     |                   |        |                   |    |                   |           |                   |           +-------------------+

one simple work-around take empty page if don't back1.png. work-around, avoid.

how can keep duplex information in create pdf if back1.png missing?

in imagemagick can add new image desired putting white or other colored image in place want. if pages same or want match right side pages size of left in example, do:

unix syntax:

convert front1.png back1.png front2.png \( +clone -fill white -colorize 100 \) result.pdf

windows syntax:

convert front1.png back1.png front2.png ( +clone -fill white -colorize 100 ) result.pdf

if using imagemagick 7, replace convert magick.


Comments

Post a Comment

Popular posts from this blog

python - Operations inside variables -

this question has answer here: evaluating mathematical expression in string 12 answers i want make python script finds maximum possible output using 2 operations. problem says there syntax error @ 2nd last line, in b in there. how can fix it? x = 0 = int(input("1st number:")) c = int(input("2nd number:" )) e = int(input("3rd number:" )) in range(4): if == 0: b = "+" elif == 1: b = "-" elif == 2: b = "/" else: b = "*" j in range(4): if j == 0: d = "+" elif j == 1: d = "-" elif j == 2: d = "/" else: d = "*" k = b c d e print(k) if you're after variables e on single line, couldn...
Read more

Generic Map Parameter java -

i having lot of methods of type: public static list<eduusers> getdetails(class c, map<string, integer> params) { list<eduusers> details = null; session session = hibernateutil.getsessionfactory().opensession(); transaction tx = null; try { tx = session.begintransaction(); criteria cr = session.createcriteria(c); (map.entry<string, integer> entry : params.entryset()) { cr.add(restrictions.eq(entry.getkey(), entry.getvalue())); } details = cr.list(); tx.commit(); } catch (exception asd) { log.debug(asd.getmessage()); if (tx != null) { tx.commit(); } } { session.close(); } return details; } i trying have generic method them , have written far: public static <t> list<t> getdetails(class<t> c, class<t> b) { l...
Read more

arrays - What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? -

what arrayindexoutofboundsexception mean , how rid of it? here code sample triggers exception: string[] name = {"tom", "dick", "harry"}; for(int = 0; i<=name.length; i++) { system.out.print(name[i] +'\n'); } your first port of call should documentation explains reasonably clearly: thrown indicate array has been accessed illegal index. index either negative or greater or equal size of array. so example: int[] array = new int[5]; int boom = array[10]; // throws exception as how avoid it... um, don't that. careful array indexes. one problem people run thinking arrays 1-indexed, e.g. int[] array = new int[5]; // ... populate array here ... (int index = 1; index <= array.length; index++) { system.out.println(array[index]); } that miss out first element (index 0) , throw exception when index 5. valid indexes here 0-4 inclusive. correct, idiomatic for statement here be: for (int index = 0; index <...
Read more