Re: [PHP] Re: How does one obtain the resolution of an image inPHP?
- Edwin - wrote: Reading the surrounding sentences, I think I can see where you're coming from. But, the above statement is a bit confusing. There is a reason why it's called pixel per INCH. And it definitely have something to do whether your monitor is set to 800x600, 1024x768, etc. It's confusing but it's not ;) It's quite hard to explain but having the monitor set to 800x600 the physical inch isn't anymore. the image is still in 80ppi but using now the bigger pixels as reference per inch. This is very confusing and this whole ppi is very disturbing, because there isn't any real standard applyable for screens. A 15-inch monitor at 800x600 will have around 53ppi x 40ppi (800 pixels divided by 15 inches, etc.) and *the same* monitor at 1024x768 will have around 68ppi x 51ppi. That's correct the ppi (theoretically) will be 53 or 68. If your 15' monitor is normally setup at 1024x768, everything (images, etc.) will look a bigger if the same image is viewed using the same monitor at 800x600. This happens because the pixels are now bigger. (One image pixel is now compose of many physical dots on the screen.) But, I guess, you already knew that. (^_^) Right ;) But the image is still in 80 ppi ;) And you probably now get where the problems are ;) Barry -- Smileys rule (cX.x)C --o(^_^o) Dance for me! ^(^_^)o (o^_^)o o(^_^)^ o(^_^o) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Re: How does one obtain the resolution of an image inPHP?
On 17 March 2006 11:15, - Edwin - wrote: A 15-inch monitor at 800x600 will have around 53ppi x 40ppi (800 pixels divided by 15 inches, etc.) and *the same* monitor at 1024x768 will have around 68ppi x 51ppi. Er, no. The 15inches is a diagonal measure, so the screen is actually about 12x9, giving 67ppi in both directions. Cheers! Mike - Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning Information Services, JG125, James Graham Building, Leeds Metropolitan University, Headingley Campus, LEEDS, LS6 3QS, United Kingdom Email: [EMAIL PROTECTED] Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: How does one obtain the resolution of an image inPHP?
Hi! On Fri, 17 Mar 2006 13:12:21 - Ford, Mike wrote: On 17 March 2006 11:15, - Edwin - wrote: A 15-inch monitor at 800x600 will have around 53ppi x 40ppi (800 pixels divided by 15 inches, etc.) and *the same* monitor at 1024x768 will have around 68ppi x 51ppi. Er, no. The 15inches is a diagonal measure, so the screen is actually about 12x9, giving 67ppi in both directions. But of course! You're right (^_^) I was thinking more of if or for example as in for example you have a 25x25-inch monitor... But, yeah, a 25x25-inch monitor is rather ridiculous, I guess. Cheers! Mike - Edwin - -- Better is a needy but wise child than an old but stupid king... - Ecclesiastes 3:18 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
