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Re: Make TV a function of X?
Sorry for the confusion, but you have figured out what I am trying
> firstname.lastname@example.org writes:
> > I have a data set that is irregularly sampled, and I
> > need to make an image-type plot of this data, and was
> > hoping to get some suggestions on the best way to do this.
> It's not totally clear what you are doing here, but I assume that each
> of your samples is actually a *vector*, and that they are irregularly
> sampled in time. But maybe it's more appropriate to say that you have
> uniformly sampled data separated by irregular gaps. Right?
Right! I am dealing with radar sampling. When a pulse is transmitted,
the return echo is uniformly sampled, and is the same from pulse to
pulse. However, the frequency (pulses/sec) of the pulses changes, plus
there are gaps where it was turned off for whatever reason.
The image plot style is perfect for this sort of experiment, using
time for the x axis and range for the y axis.
> I have had a hard time representing the same kind of data. My best
> technique so far is to label the X axis as "sample number," and let
> them appear uniformly sampled. Then I place a vertical separator
> lines whenever gaps would be. Finally, you might want to label each
> continuous segment with the time if you have room. Not perfect, but
> what can you do?
Thanks for the suggestion, however, it won't work in this case. I
have to have a meaningful time axis, so that I can compare to the
other instruments that were operating. Also, I am dealing with
thousands of pulses, so I can't label the time easily.
I am thinking I will have to make some sort of fake data set by
making a fake time array and put the data in where it exists, and
fill it with zeros where it doesn't. Yuck! This has to be
a common problem, so has anyone else thought of a solution?
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