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Topic: Hi-resolution jpeg or vectorial graphics?
Replies: 1   Last Post: Jan 30, 2013 8:35 PM

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Posts: 26
Registered: 12/22/12
Re: Hi-resolution jpeg or vectorial graphics?
Posted: Jan 30, 2013 8:35 PM
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On Thu, 31 Jan 2013 01:28:12 +0000, Vittorio wrote:

> Thank you. It's people like you that make this community invaluable.

No charge.

> Luckly I solved my problem by placing an EPS wrapper around a JPEG,
> using sam2p (

You must have a uniquely odd configuration.

> anyone <jaup@h/WSWLG{nR1³qHe> wrote in message
> <51097c9f$0$51973$c3e8da3$>...

>> On Mon, 28 Jan 2013 23:04:08 +0000, Vittorio wrote:

>> > Hello,
>> >
>> > I'm writing for the first time to the community because I need help
>> > in generating an image. I have an image that I plot using pcolor, it
>> > is the rendering of an electromagnetic imaging algorithm (it looks
>> > like a sort of mri). I have to overlap on top of this image a couple
>> > of simple shapes (circles, lines, etc) to indicate the actual
>> > position of the objects that I am imaging. I need the output to be a
>> > very high resolution jpeg or a vector graphics image.
>> >
>> > As far as I know there are two ways to do that, and I am failing at
>> > both :)
>> >
>> > 1) Save the image obtained with pcolor as eps, then somehow overlap
>> > to it the circles/lines, and save everything as a new eps. I simply
>> > don't know how to manipulate eps files, so this has failed me. Using
>> > eps might or might not make sense, since my original image is like an
>> > mri, not at all vectorial-looking.
>> >
>> > 2) Save the image as a high resolution Jpeg and then "photoshop" on
>> > top of it the circles/lines. The problem here is that when I save the
>> > image its resolution turns out to be 96 dpi, which is not sufficient
>> > (I need at least 300 dpi). I have tried also this:
>> > print(h,'-djpeg','-r300','image_hires.jpg')
>> > but it does not work. In the properties of window it says it is still
>> > 96 dpi, and when I have the image checked by the online tool that has
>> > to approve it, it says that the resolution actually became 72 dpi.

>> Well, that's odd. I more or less routinely save figures to high-res
>> png and jpg -- similar to your syntax -- and that works as expected. I
>> usually use Gimp, Paint Shop Pro, or Inkscape for post-edit, and each
>> of those will show dpi or ppi that is entirely consistent with my
>> Matlab choice, from R2012b and further back than R2009a.

>> > Does anybody have suggestions on how I should proceed?
>> Nope.

>> >By the way, I am using MATLAB R2011b.
>> > Thanks in advance,
>> For what?

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