Imagemagick convert - portrait / landscape

Dave_Faulkner

Hi All,

I have a problem i simply havent been able to work out. Ive been to hotscripts and the imagemagick website but cant find any info on it anywhere. So hoping someone could help me.

What i have is a site where users come and upload photos.

I have my script set up so that it generates a thumbnail from the uploaded image - by doing a "convert geometry -200" on the image - using imagemagick.

However the other day someone uploaded a photo in portrait format which mucked up the scheme (something i didnt think of).

So, what i want to do is have it resize the image based on it dimensions.

If the image is wider than it is taller then id want to have it convert the width to 200 pixels. Alternatively if the image is higher than it is wider, then i want to have it convert the height to 200 pixels.

im assuming it would be an if statement of some sort in the PHP, but hoping someone could point me in the right direction.

Many thanx in advance....

Regards

Dave

Weedpacket

Well, you can use getImageSize() to get the image's size ... the rest you'll be able to work out for yourself 🙂

quicknik

hi,

convert can do that for you.
use -geometry '200x200'

from now on the larger side of the image will vbe resized to 200 while the smaller one will be scaled.

bye,
niko

mrsocks

quiknik,

i am trying to provide a function to my visitors to allow them to upload pictures. i am using the upload script that check the size, dimensions and type.

i would like to have a function that would (preferably automatically if it is too large or the wrong type.) resize the image and finish uploading the image to the directory.

i am looking at the imagemajick.org website and cant seem to find the correct use for geomtry and how to use it.

any guidence would be great .
thanks

quicknik

hi,

well...that is exactly what convert does with the options i mentioned above.
I am using this at serveral of my own websites 🙂
in detail:
lets assume your max image size should be 100x100 pix .
with -geometry '100x100' convert will resize the uploaded
image so that the largest side of the uploade image will be resized to 100 and the other will be scaled.
eq:
200x100 will become 100x50
200x400 will become 50x100

i guess that is exactly what you need.

regards,
niko