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Re: plot discrete spectrum
*To*: mathgroup at smc.vnet.net
*Subject*: [mg23320] Re: [mg23266] plot discrete spectrum
*From*: BobHanlon at aol.com
*Date*: Tue, 2 May 2000 00:43:04 -0400 (EDT)
*Sender*: owner-wri-mathgroup at wolfram.com
It is not that the PointSize is ignored, but rather that there are no points
since they were all replaced by lines. I misunderstood what you desired. For
both points and lines, you could use
plt = (ListPlot[data, PlotStyle -> {PointSize[0.015], RGBColor[1, 0, 0]},
DisplayFunction -> Identity, PlotRange -> All] /.
Point[{x_, y_}] :> Sequence[Point[{x, y}], Line[{{x, y}, {x, 0}}]]);
Although this makes the points and the lines the same color. If you want the
points and lines to be distinct colors then you could use
plt = ListPlot[data, PlotStyle -> {PointSize[0.015], RGBColor[1, 0, 0]},
DisplayFunction -> Identity, PlotRange -> All] ;
Show[{plt,
plt /. {Point[{x_, y_}] :> Line[{{x, y}, {x, 0}}],
RGBColor[1, 0, 0] :> RGBColor[0, 0, 1]}},
DisplayFunction -> $DisplayFunction, Frame -> True];
In a message dated 5/1/2000 11:15:27 AM, murray at math.umass.edu writes:
>That's an interesting way to do it. But if, instead of the PlotStyle
>optioon you prescribed, I use instead, say,
>
> PlotStyle -> {PointSize[0.015], Red}
>
>then the PointSize seems to be ignored.
>
>BobHanlon at aol.com wrote:
>>
>> data = Table[{x = 4Pi(Random[] - .5), Sin[x]/x}, {20}];
>>
>> plt = (ListPlot[data, PlotStyle -> RGBColor[0, 0, 1],
>> DisplayFunction -> Identity, PlotRange -> All] /.
>> Point[{x_, y_}] :> Line[{{x, y}, {x, 0}}]);
>>
>> Show[plt, DisplayFunction -> $DisplayFunction, Frame -> True];
>>
>> In a message dated 4/29/2000 10:29:33 PM, murray at math.umass.edu writes:
>>
>> >Is there an easy way to do a ListPlot[{{{x1, y1}, {x2, y2}, ..., {xn,
>> >yn}} in which each a perpendicular is dropped from each dot to the
>> >horizontal axis?
>> >
>> >Of course, when can combine the ListPlot with a Graphics object
>> >consisting of line segments. I prefer a way that avoids using graphics
>> >primitives directly.
>> >
>> >The sort of plot I want is what's usually done to display, for example,
>> >the energy spectrum of a Fourier series.
>>
>> Bob
>>
>> BobHanlon at aol.com
>
Bob
BobHanlon at aol.com
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