Re: Some more specific basic questions

2000-10-27 Thread Jeffrey Goldberg

On Fri, 27 Oct 2000, Rebecca J. Walter wrote:

> i think i might be able to help with a few these but sounds like youre
> starting to work it out.

I am.

> [...] so then you either anchor it to an existing layer or using the
> layers dialog to create a new layer for it

What I've been doing is creating a new layer.  Pasting, and then
anchoring.  If there is a one step "past onto new layer" that would be
nice.  I guess my intuition about what pasting has conflicted with what
GIMP actually does.

Thanks.

> Jeffrey Goldberg wrote:
> > (1) Is there a way to "checkpoint" or save

> save your image in gimp's native file format (.xcf),

Several people have pointed this out and I managed to discover this on
my own shortly after I sent my message.

> > (2) Feathering and transparency.

> i deleted out your explanation of how you do it.  youre doing it the
> long way there is a script for that.  
> 
> go to script-fu --> selection --> fade outline.  should make EXACTLY
> what you want.

Ah.  Thank you.

> jpgs do not have transparenyc.

So I've learned.  Somehow I thought that the did.  Also, as others have
pointed out. GIFs only have 1 bit of transparency, so the feathering
doesn't happen as at each pixel transparency is either on or off.

But also, now that I can save GIMP states I can largely work around the
transparency/fading problem by saving the layered object and generating
lots of related images with different backgrounds.  It's not as nice as
a simple transparent image (which would cache in browswers, etc), but it
will serve. 

> > (3) Resizing

> go to image and then scale.

Thank you.

I am begining to find these things, but it took me a long time to get used
to actually working with the layers window.  And as others have said, I
have started playing with things and suddenly my ambitions about what
I want to do have grown.

Again, thank you for your help.

While I doubt that I will be able to make it up on this list, I do
have a policy of answering two questions for everyone I ask, but I might
have to answer in places where I am not such a neophyte.

Cheers,

-j


-- 
Jeffrey Goldberg
I have recently moved, see http://www.goldmark.org/jeff/contact.html
Relativism is the triumph of authority over truth, convention over justice




Re: Some more specific basic questions

2000-10-27 Thread Rebecca J. Walter

i think i might be able to help with a few these but sounds like youre
starting to work it out.  about the anchoring a layer thing...
what happens when you paste is that you make something called a
"floating selection".  when you do that gimp doesnt know where you want
to put it, or if you want it part of an old layer or in a layer of it's
own.  so it "floats" and keeps you from doing anything else until you
tell it.  so then you either anchor it to an existing layer or using the
layers dialog to create a new layer for it (cntrl-n might also work, i
dont remember at the moment).


Jeffrey Goldberg wrote:
> (1) Is there a way to "checkpoint" or save a state when using the
> gimp.  Often I get to some state which I think is a good place to
> progress from, try things and then want to back track to that state
> if things don't go well.  I know I can use Ctrl-Z (and increase the
> undo stack depth), but it really would be nice to be able to "reset"
> to some named state.

save your image in gimp's native file format (.xcf), it's kinda big but
it saves EVERYTHING.. all the layer info, any guides you have, etc etc
etc.  then you can revert to it or load it if you want.

> (2) Feathering and transparency.
> I am taking a simple snapshot of my daughter.  Selecting an oval
> around her (guide lines are very helpful for setting corners to an
> oval I've discovered :-).  I want that selection feathered (I can
> do that), but with no background (or a transparent background).

i deleted out your explanation of how you do it.  youre doing it the
long way there is a script for that.  

go to script-fu --> selection --> fade outline.  should make EXACTLY
what you want.
> 
> I've tried saving as GIF and PNG, never getting a feathered oval against
> a transparent background.  Now as far as I understand, JPEGs, GIFs and
> PNGs do have transparency (alpha channel).

jpgs do not have transparenyc.  pings have it, but dont save the
background color.

> 
> I've also noticed that when I peek into to "challenges" list on the
> "layers and channels" window, I only see R, G, and B, but no Alpha.
> 
> (3) Resizing
> 
>   The image that I am starting with is large and high resolution.  I
>   want to create something much smaller.  Yet it seems to me that when
>   I use resize in the GIMP, it only shrinks its presentation to me of what
>   I am working on.  What gets saved, still remains large.

go to image and then scale. that should be the one you would want to use
for resizing a whole image.



Re: Some more specific basic questions

2000-10-26 Thread Richard FitzJohn



On Thu, 26 Oct 2000, Jeffrey Goldberg wrote:

> On Thu, 26 Oct 2000, Michael wrote:
> 
> > > (1) Is there a way to "checkpoint" or save a state when using the
> > 
> > Why don't you save your work in Gimp's native format - XCF? All layers,
> > paths, channels etc. are saved then.
> 
> I just noticed that after I sent my mail.

Also, try Ctrl-d (duplicate), which makes an copy of your image (including
layers etc); you can work on one, and if it mucks up, use the other. 

hth,
Richard




Re: Some more specific basic questions

2000-10-26 Thread Jeffrey Goldberg

On Thu, 26 Oct 2000, Michael wrote:

> > (1) Is there a way to "checkpoint" or save a state when using the
> 
> Why don't you save your work in Gimp's native format - XCF? All layers,
> paths, channels etc. are saved then.

I just noticed that after I sent my mail.

 
> > (2) Feathering and transparency.
> 
> The problem is that the most graphic formats like JPG, BMP etc. don't
> support full alpha transparency (i.e. 8bit alpha). GIF supports a 1bit
> alpha channel (visible/invisible). PNG is the most popular format
> supporting 'real' 8bit transparency.

Ahh.  OK.  That would explain why the GIFs weren't feathered.  It must
have rounded the alpha channel to either on or off.


> > (3) Resizing
> 
> Use -Image-Rescale to rescale your image or use the crop tool (im
> Gimp 1.1.x a button with a knife on it) to crop it.

Thanks.  I will persist with those, now knowing that I'm barking up the
right tree.

 
> Hope it helps!

That helps a great deal.

Thank you.

-j

-- 
Jeffrey Goldberg
I have recently moved, see http://www.goldmark.org/jeff/contact.html
Relativism is the triumph of authority over truth, convention over justice




Re: Some more specific basic questions

2000-10-26 Thread Michael

Hi!

> (1) Is there a way to "checkpoint" or save a state when using the

Why don't you save your work in Gimp's native format - XCF? All layers,
paths, channels etc. are saved then.

> (2) Feathering and transparency.

The problem is that the most graphic formats like JPG, BMP etc. don't
support full alpha transparency (i.e. 8bit alpha). GIF supports a 1bit
alpha channel (visible/invisible). PNG is the most popular format
supporting 'real' 8bit transparency.

> (3) Resizing
> The image that I am starting with is large and high resolution.  I
> want to create something much smaller.  Yet it seems to me that when
> I use resize in the GIMP, it only shrinks its presentation to me of
> what I am working on.  What gets saved, still remains large.

Use -Image-Rescale to rescale your image or use the crop tool (im
Gimp 1.1.x a button with a knife on it) to crop it.

Hope it helps!

CU, Michael

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