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How can I make ListPlot output a graphic in Mathematica 9?

Dear All

I'm new to this forum, so apologies if this is the wrong place for my question and/or it's been asked before.

I'm using Mathematica 9, and I'm having some trouble with the ListPlot function. For example, say I execute this code:

data1 = {0.1, 0.4, 0.3}; ListPlot[data1, Joined -> True]

then I get a nice little plot in my notebook. But say I execute this code instead:

data1 = {0.1, 0.4, 0.3}; ListPlot[data1, Joined -> True]; data2 = {0.2, 0.3, 0.4}; ListPlot[data2, Joined -> True]

then it only gives me the second plot (i.e. data2), rather than the two plots (i.e. data1 & data2).

In previous versions of Mathematica (version 5, perhaps?), this code would have returned two plots (or, rather, it would if I used PlotJoined rather than Joined).

The context is that I want to use a single line of code, with a Do function, to return several plots of data, each dataset being generated by a separate iteration of the Do function. But even something as simple as:

data = {0.1, 0.4, 0.3}; Do[ListPlot[data, Joined -> True], {10}]

is not doing what I want it to.

I'd be grateful for any advice on this issue.

Best wishes

Andy

POSTED BY: Andy Gardner
3 Replies

Thank-you Nasser & Bill -- that's solved my problem.

Best wishes

Andy

POSTED BY: Andy Gardner
Posted 10 years ago

Try this

data2 = {0.2, 0.3, 0.4};
Print[ListPlot[data1, Joined -> True]];
data1 = {0.1, 0.4, 0.3};
Print[ListPlot[data2, Joined -> True]]

and this

data = {0.1, 0.4, 0.3};
Do[
 Print[ListPlot[data, Joined -> True]], {10}]
POSTED BY: Bill Simpson

Inside Do need to use Print to get the output to display. Also ";" suppresses output that is why you do not see the plot in the first case. For the loop, you can try

data = {0.1, 0.4, 0.3};
p = Last@Reap[Do[Sow@ListPlot[data, Joined -> True], {10}]];
Grid[p]
POSTED BY: Nasser M. Abbasi
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