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Re: st: Video from multiple graph exports


From   Michael Hanson <mshanson@mac.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Video from multiple graph exports
Date   Wed, 03 Dec 2008 20:58:56 -0500

Dan:

At the risk of beating a dead horse, and recognizing that you may not have access to a Mac, Keynote (akin to PowerPoint, but available for Mac OS X only) not only allows complete control over the opacity of imported images, but one can even program it to change the opacity of images dynamically as part of a presentation. I have done this with graphs generated from Stata in presentations of my own. For what it's worth, I believe everything you have described that you want to do can be accomplished in Keynote.

I won't bore the rest of the list with details as this is relatively off-topic for Statalist, but feel free to contact me directly should you wish to discuss further.

Hope this helps,
Mike


On Dec 3, 2008, at 7:48 PM, Dan Weitzenfeld wrote:

I think I'm barking up the wrong tree.  I found, in a previous
statalist discussion, "At the moment Stata
does not allow a level of transparency in the graphics engine."  It
seems that transparency support would be necessary for overlaying a
graph on top of an image. Indeed, when I try exporting .pngs with
regions having "zero" fill, the resulting file is still opaque.

On Wed, Dec 3, 2008 at 4:28 PM, Dan Weitzenfeld
<dan.weitzenfeld@emsense.com> wrote:
Thanks for suggestions, all.  I am playing around with ImageJ, and
will try MovieMaker.

Sergiy,

Basically I'm trying to overlay a graph on top of an image - the image
can be .jpg, .png, etc.  To give you a concrete example, one type of
data I work with is eye-tracking data, so I would like to - within
Stata - generate a graph in which the image/stimuli is the background.

The shp -> GIS package is an interesting idea, but it feels like
overkill because (with the help of -spmap-) Stata will do everything I
need except for putting a graph on top of an image.  I'll definitely
look into it, though.  Has anyone written a program that converts
-spmap- files (e.g. Basemap files) to .shp?



-Dan



On Wed, Dec 3, 2008 at 4:05 PM, Sergiy Radyakin <serjradyakin@gmail.com> wrote:
Hi!

I've done videos like that. Once you have all your frames in .png
files, select all of them, drag and drop to the Windows MovieMaker,
there check that they are in the proper sequence, and place them into the timeline. You can adjust the delay interval individually for each
file or for the whole sequence. You can add a soundtrack right away.
Then save as a video file (wmv).
Example available.

Alternatively, many viewers support command line activated slide show
mode, for Windows platform, check free IrfanView, which is an
excellent Viewer/Converter. I don't think you will have a lot of
control though, e.g. setting individual delays for each file.
http://www.irfanview.com/
http://gd.tuwien.ac.at/graphics/irfantut/commopti.html

As for Q2, Stata does not support JPG files for any purpose and you
should not either. JPG is a format for digital photography, for
noise-rich analog-to-digital conversion (via scanner of digital
camera) from the real world to the world of computers. For images
generated inside your computer, use one of the lossless formats, like png. Why don't you export your data to shp format from Stata and plot
in a GIS package?

Best regards, Sergiy Radyakin


On Wed, Dec 3, 2008 at 2:49 PM, Dan Weitzenfeld
<dan.weitzenfeld@emsense.com> wrote:
Hi Folks,
I'm considering making a movie using multiple Stata graphs, exported.
E.g., for t=0,1,...n, graphing the data at each t, and then using a
slide-show program to stack the graphs in time order, creating a
"movie" illustrating how the data changes over time.
My questions:

1.  Has anyone does this before, and if so, do you have
recommendations for the most flexible slide-show program?
Specifically, I'm wondering if there is a program that will allow for
variable intervals between slides (e.g., t=0, 1.5, 2, 2.2,....)

2.  Is there a way to overlay a Stata graph on top of a .jpg file?
I've been doing this manually, using -spmap- to plot my
location-oriented data, exporting graphs as .emf/.wmf, ungrouping the
result in PowerPoint and aligning the .jpg overlay.

3. Am I trying to use Stata to do something it's not suited for? I know JMP can play movies from data, but I don't think the movies can
be exported, and, well, I'm partial to Stata.

Thanks in advance,
-Dan
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--
Dan Weitzenfeld
Media Analyst
EmSense Corporation
512 2nd Street, 3rd Floor
San Francisco, CA 94107
w: 415.418.7314
m: 510.552.0106
dan.weitzenfeld@emsense.com




--
Dan Weitzenfeld
Media Analyst
EmSense Corporation
512 2nd Street, 3rd Floor
San Francisco, CA 94107
w: 415.418.7314
m: 510.552.0106
dan.weitzenfeld@emsense.com
*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



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