Text archives Help
- From: "Jim Kress" <jimkress_58@kressworks.org>
- To: <iv3d-users@sci.utah.edu>
- Subject: [IV3D-USERS] RE: Re: Help on data input and Axis Display
- Date: Tue, 19 Jan 2010 15:36:53 -0500
>
After selecting that file and then a UVF to save to, you should get a
>
dialog where IV3D complains it cannot recognize the file, and it should
>
ask if you want to specify the data set parameters manually. That is,
>
page 13 and 14 of the manual. Is that not popping up for you? Please
>
"Report an Issue" and send me (personally) a ping if so.
Using the data set I sent you previously, and following the process shown in
the attached file ImageVis3D crashes as the last image shows.
What did I do wrong in image 2?
Jim
>
-----Original Message-----
>
From: tom fogal [mailto:tfogal@alumni.unh.edu]
>
Sent: Tuesday, January 19, 2010 2:41 PM
>
To: iv3d-users@sci.utah.edu
>
Subject: [IV3D-USERS] Re: Help on data input and Axis Display
>
>
"Jim Kress" <jimkress_58@kressworks.org> writes:
>
> Tom,
>
>
>
> What file extension did you use to enable the text reader?
>
>
What you sent it as -- a .txt.
>
>
I did have to change "Files of type" to "All Files", because otherwise
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ImaegVis3D's file selection dialog would filter it out, thinking it was
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something that could be opened.
>
>
> Did you make any changes to the input file?
>
>
Nope.
>
>
>
After selecting that file and then a UVF to save to, you should get a
>
dialog where IV3D complains it cannot recognize the file, and it should
>
ask if you want to specify the data set parameters manually. That is,
>
page 13 and 14 of the manual. Is that not popping up for you? Please
>
"Report an Issue" and send me (personally) a ping if so.
>
>
-tom
>
>
> > -----Original Message-----
>
> > From: tom fogal [mailto:tfogal@alumni.unh.edu]
>
> > Sent: Saturday, January 16, 2010 5:40 PM
>
> > To: iv3d-users@sci.utah.edu
>
> > Subject: [IV3D-USERS] Re: Help on data input and Axis Display
>
> >
>
> > "jimkress_58" <jimkress_58@kressworks.org> writes:
>
> > > > Unfortunately the raw reader is generally based around an implicit
>
> > > > data layout, i.e. data start at (0,0,0) and change in X slowly and
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> > > > in Z quickly. There's a radio button for "text" input, but
looking
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> > > > through the code, all our IO is unformatted so I'm a little wary
>
> > > > that the text path is relatively untested.
>
> >
>
> > Side note: we actually do parse text using the right kind of IO
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> > routines, I just didn't notice the code before my earlier mail.
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> >
>
> > > Yeah. I tried the "text" option and my computer hung.
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> >
>
> > Hrm. It loaded up fine on my workstation...
>
> >
>
> > Could you use the report an issue dialog && create a bug report for
>
> > this, so I don't forget about it?
>
> >
>
> > > > I would doubt it is meaningful, because I don't think the
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> > > > conversion step did something intelligent. Then again, you know
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> > > > your data better than I do :). Do the generated images "look" like
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> > > > your data?
>
> > >
>
> > > Hard to tell if I cannot determine their x,y,z spatial location.
>
> > > Maybe I'll try slicing the data and see if the contoured intensity
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> > > for each slice corresponds to the volumetric information presented.
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> >
>
> > Now that I've found what code reads this, I can see it's not
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> > understanding the data correctly. Nonetheless I've attached an image.
>
> >
>
> > > > C++. Adding a new reader is pretty easy/self-contained, so really
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> > > > if you've got someone that knows any ALGOL-derived language && is
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> > > > willing to google some terms, that will be enough that we could
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> > > > walk them through what's needed.
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> > >
>
> > > ARGH! You've hit the chink in my armor. However, I can try to
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> > > struggle through it (I have 30 years of FORTRAN experience but am
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> > > just starting to learn C++). What's the best existing reader to use
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> > > as a starting template?
>
> >
>
> > I get this/similar questions a lot. I *finally* wrote up some
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> > documentation for it; a PDF is attached.
>
> >
>
> > -tom
>
> >
>
> > > > -----Original Message-----
>
> > > > From: tom fogal [mailto:tfogal@alumni.unh.edu]
>
> > > > Sent: Saturday, January 16, 2010 1:48 PM
>
> > > > To: iv3d-users@sci.utah.edu
>
> > > > Subject: [IV3D-USERS] Re: RE: Re: RE: Re: Help on data input and
Axis
>
> > > > Display
>
> > > >
>
> > > > "jimkress_58" <jimkress_58@kressworks.org> writes:
>
> > > > > > From a (very) quick read, I'd say this isn't a point cloud.
It
>
> > > > > > looks as if your data's ranges are [1:16],[2:9],[7:15], and
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> further
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> > > > > > there are no `holes' in the data (i.e. no combination of those
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> > > > > > three indices which is not represented). If this is true,
you've
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> > > > > > got regular, gridded data, which is exactly what we need for
>
> > > > > > ImageVis3D.
>
> > > > >
>
> > > > > OK.
>
> > > > >
>
> > > > > However, when asked, ImageVis3D appears to import the file. It
>
> > > > > just asks for the extent (number of points?) in each direction,
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> > > > > i.e. 16,8,9.
>
> > > >
>
> > > > Yeah, you're getting the raw conversion dialog, which (if you say
>
> > > > `yes') comes up when we can't figure out any metadata that would
help
>
> > > > us read the file.
>
> > > >
>
> > > > Unfortunately the raw reader is generally based around an implicit
>
> data
>
> > > > layout, i.e. data start at (0,0,0) and change in X slowly and in Z
>
> > > > quickly. There's a radio button for "text" input, but looking
through
>
> > > > the code, all our IO is unformatted so I'm a little wary that the
text
>
> > > > path is relatively untested.
>
> > > >
>
> > > > Worse, detecting errors at that stage is essentially impossible,
>
> > > > because we don't know anything about the file. So, ImageVis3D
will
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> > > > happily do whatever conversion you've asked for, without regard to
>
> > > > whether that conversion makes any sense.
>
> > > >
>
> > > > > Is this imported volumetric image I observe meaningful?
>
> > > >
>
> > > > I would doubt it is meaningful, because I don't think the
conversion
>
> > > > step did something intelligent. Then again, you know your data
better
>
> > > > than I do :). Do the generated images "look" like your data?
>
> > > >
>
> > > >
>
> > > > As a side note, these data are pretty low res. If they're low
>
> > > > resolution for visualization reasons, and you can obtain higher
res,
>
> > > > do so. People don't tend to believe me until they've done it a
couple
>
> > > > times, but (seriously!) the size of the data is irrelevant to
IV3D.
>
> > > >
>
> > > > > Is the grey scale presented in the image controlled by the
number of
>
> > > > > bytes allowed by the graphics card?
>
> > > >
>
> > > > You're seeing grey because the default renderer is based on 1D
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> transfer
>
> > > > functions, and the default 1D transfer function is a ramp for all
4
>
> > > > color channels. You can modify the current function with the "1D
>
> > > > Transferfunction editor", accessible from the Workspace menu.
More
>
> > > > details are in the manual.
>
> > > >
>
> > > > > What would happen if I changed the file so that the intensity
for
>
> > > > > points outside the current data ranges, that is for points
[1:16],
>
> > > > > [1,10:16] [1:6,16], are zero?
>
> > > >
>
> > > > I'm not sure I follow that syntax correctly, but it sounds like
you
>
> > > > want to add more points to your domain, outside the original
domain,
>
> > > > initialized to 0? With the default parameters, the only thing
that
>
> > > > will happen is that your domain size will increase. This is
because
>
> > > > the default transfer functions are set to remove / not visualize
>
> > > > 0-valued data. You could change this in the 1D TF editor by
making
>
> the
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> > > > leftmost components non-zero.
>
> > > >
>
> > > > > > If there's anybody in your group who can code, have them
follow up
>
> > > > > > on tuvok-developers [1].
>
> > > > >
>
> > > > > Code in what language?
>
> > > >
>
> > > > C++. Adding a new reader is pretty easy/self-contained, so really
if
>
> > > > you've got someone that knows any ALGOL-derived language && is
willing
>
> > > > to google some terms, that will be enough that we could walk them
>
> > > > through what's needed.
>
> > > >
>
> > > > > Also, is the amount of video memory just that which is on the
(in
>
> > > > > my case) embedded controller or does it include the TOTAL
Available
>
> > > > > Graphics Memory = Dedicated Video Memory + Share System Memory?
>
> > > >
>
> > > > To be honest, we ignore the graphics memory setting for now, due
to
>
> > > > limitations of the rendering API. Someday in the distant future I
>
> hope
>
> > > > that will be fixable, at which point the "GPU Memory" slider would
>
> want
>
> > > > to know just your "Dedicated Video Memory".
>
> > > >
>
> > > > > Thanks for your help. I hate to be such a nag but the software
has
>
> > > > > such a huge upside for the work I am doing that could help many
>
> > > > > people.
>
> > > >
>
> > > > Not a nag at all. We love to get more people using our software!
=)
>
> > > >
>
> > > > Cheers,
>
> > > >
>
> > > > -tom
>
> > > >
>
> > > > > -----Original Message-----
>
> > > > > From: tom fogal [mailto:tfogal@alumni.unh.edu]
>
> > > > > Sent: Saturday, January 16, 2010 3:41 AM
>
> > > > > To: iv3d-users@sci.utah.edu
>
> > > > > Subject: [IV3D-USERS] Re: RE: Re: Help on data input and Axis
>
> Display
>
> > > > >
>
> > > > > "Jim Kress" <jimkress_58@kressworks.org> writes:
>
> > > > > > The file is attached. It is ASCII and would meet (I believe)
your
>
> > > > > > definition as point clouds. Please note: cloud is in the
plural.
>
> > > > >
>
> > > > > >From a (very) quick read, I'd say this isn't a point cloud. It
>
> looks
>
> > > > > as if your data's ranges are [1:16],[2:9],[7:15], and further
there
>
> > > > > are no `holes' in the data (i.e. no combination of those three
>
> indices
>
> > > > > which is not represented). If this is true, you've got regular,
>
> > > > > gridded data, which is exactly what we need for ImageVis3D.
>
> > > > >
>
> > > > > If there's anybody in your group who can code, have them follow
up
>
> on
>
> > > > > tuvok-developers [1]. Otherwise I'll add an ASCII reader to my
todo
>
> > > > > list...
>
> > > > >
>
> > > > > -tom
>
> > > > >
>
> > > > > [1] https://lists.sci.utah.edu/sympa/subscribe/tuvok-developers
>
> > > > >
>
> > > > > > -----Original Message-----
>
> > > > > > From: tom fogal [mailto:tfogal@alumni.unh.edu]
>
> > > > > > Sent: Friday, January 15, 2010 6:38 PM
>
> > > > > > To: iv3d-users@sci.utah.edu
>
> > > > > > Subject: [IV3D-USERS] Re: Help on data input and Axis Display
>
> > > > > >
>
> > > > > > <jimkress_58@kressworks.org> writes:
>
> > > > > > > My dataset consists of one file with many single lines of
data,
>
> each
>
> > > > > > > of which contains the X, Y, Z, and Intensity measured at
that
>
> X,Y,Z
>
> > > > > > > point in space. What is the best way to feed this into
>
> ImageVis3D?
>
> > > > > >
>
> > > > > > We'll need a bit more info on this format. Is there any
structure
>
> to
>
> > > > > > these points, or do they essentially form a `point cloud'?
>
> Secondly,
>
> > > > > > are these ASCII or binary files?
>
> > > > > >
>
> > > > > > > Also, I need to be able to display X, Y, and Z axes with
user
>
> > > > > > > configurable scaling and tic mark number, value and location
on
>
> each
>
> > > > > > > axis.
>
> > > > > >
>
> > > > > > There's currently no support for this in ImageVis3D, though
the
>
> > > > request
>
> > > > > > has been brought up before.
>
> > > > > >
>
> > > > > > > I can provide a sample input file if you will tell me how to
get
>
> it
>
> > > > > > > to you.
>
> > > > > >
>
> > > > > > If you've got a very small example (kilobytes), sending it to
this
>
> > > > > > mailing list is the best mechanism.
>
> > > > > >
>
> > > > > > If it's anything larger, use ImageVis3D's builtin "Report an
>
> Issue"
>
> > > > > > dialog, under the help menu. Add a description describe the
file
>
> > > > > > format, and use the "Add files" button to add one or more
example
>
> > > > > > files.
>
> > > > > >
>
> > > > > > -tom
>
>
>
>
Attachment:
ImageVis3d_screens.rtf
Description: MS-Word document
- [IV3D-USERS] Help on data input and Axis Display, jimkress_58, 01/15/2010
- [IV3D-USERS] Re: Help on data input and Axis Display, tom fogal, 01/15/2010
- [IV3D-USERS] RE: Re: Help on data input and Axis Display, Jim Kress, 01/15/2010
- [IV3D-USERS] Re: RE: Re: Help on data input and Axis Display, tom fogal, 01/16/2010
- [IV3D-USERS] RE: Re: RE: Re: Help on data input and Axis Display, jimkress_58, 01/16/2010
- [IV3D-USERS] Re: RE: Re: RE: Re: Help on data input and Axis Display, tom fogal, 01/16/2010
- [IV3D-USERS] RE: Re: RE: Re: RE: Re: Help on data input and Axis Display, jimkress_58, 01/16/2010
- [IV3D-USERS] Re: Help on data input and Axis Display, tom fogal, 01/16/2010
- [IV3D-USERS] RE: Re: Help on data input and Axis Display, Jim Kress, 01/19/2010
- [IV3D-USERS] Re: Help on data input and Axis Display, tom fogal, 01/19/2010
- [IV3D-USERS] RE: Re: Help on data input and Axis Display, Jim Kress, 01/19/2010
- [IV3D-USERS] Re: RE: Re: Help on data input and Axis Display, tom fogal, 01/19/2010
- [IV3D-USERS] RE: Re: RE: Re: Help on data input and Axis Display, Jim Kress, 01/19/2010
- [IV3D-USERS] Re: Help on data input and Axis Display, tom fogal, 01/19/2010
- [IV3D-USERS] RE: Re: Help on data input and Axis Display, jimkress_58, 01/20/2010
- [IV3D-USERS] Re: RE: Re: Help on data input and Axis Display, tom fogal, 01/20/2010
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