Re: Plotting data with Excel
- From: "Bob" <SkiBoyBob@xxxxxxxxxx>
- Date: Tue, 31 Jan 2006 12:50:04 -0800
"Rune Allnor" <allnor@xxxxxxxxxxxx> wrote in message
news:1138722531.640861.235120@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi there.
>
<snip>
>
> What I want to know is if it is possible at all to have excel do
> something like IMAGESC in matlab. That is, take a NxM
> matrix and make an image where the color of pixel (n,m)
> is somehow related to the numerical value in cell (n,m).
>
> The data consist of N time series, each M samples long.
> I want to plot them either as intensity-coded images, or
> as vertical traces, "waterfall transposed" so to speak.
>
> Any suggestions and comments are appreciated.
>
> Rune
Hi Rune,
I would just write a quick BMP file utility to take your raw data and
generate an un-compressed windows bitmap file. With a command line interface
for parameters (N and M, for example) or with that info embedded in a header
to your raw data files, the actual data-to-bmp code is trivial. Customer
could then use windows paint or some such to view it. The nice thing about
BMP is it supports un-compressed images so you don't even have to do RLE of
LZW, just construct the header and spit out the pixels (with whatever
data-to-color algorithm you want). Google "BMP file format".
Bob
.
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