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Re: Multicolored dashed lines??? [message #45690 is a reply to message #45551]

Thu, 22 September 2005 05:33

Haje Korth
Messages: 651
Registered: May 1997

Senior Member

I take back what I just said, no linestyle bug in IDL. My coffee must not
have made its way in my system yet. The pixelation was just due to
specifying a color array with 100000 elements. Duh....

Haje

"Haje Korth" <haje.korth@nospam.jhuapl.edu> wrote in message
news:dgu7o9$pbq$1@aplcore.jhuapl.edu...
> Good morning,
> Thanks for everyone's help. Both Matt's and Bob's solutions work. I ran
> into an additional problem, which made me go with the PLOTS procedure and
> the color array Bob suggested.
>
> The problem is that if the array to be plotted has a lot of elements, say
> 100000, the long dashed lines are turned into tiny pixels. This is clearly
> a bug in IDL (this is v6.2 on Windoze) since the appearance of the line
> should be independent of the size of the array. Right?
>
> However, Bob's solution can be adapted to create a workaround to the
> problem. That, is create the pattern first using a smaller array and then
> blow it up with congrid. In the solution below there are always 100
> dashes:
>
> plots,findgen(100000l),findgen(100000l) +
> 5,linestyle=5,color=congrid((findgen(100) mod 2)*255,100000l)
>
>
> Thanks and Cheers,
> Haje
>
>
> "Haje Korth" <haje.korth@nospam.jhuapl.edu> wrote in message
> news:dgsgmn$s9c$1@aplcore.jhuapl.edu...
>> Hi,
>> Before I start coding something really crappy, I wanted to ask if anyone
>> has a routine that can plot a multicolored dashed line (e.g.,
>> black-white)? The purpose is to have a line that can be seen against
>> arbitrary background colors, such as used in a color spectrogram.
>>
>> Thanks,
>> Haje
>>
>
>

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[Message index]

		Multicolored dashed lines??? By: Haje Korth on Wed, 21 September 2005 13:44
		Re: Multicolored dashed lines??? By: Haje Korth on Thu, 22 September 2005 05:33
		Re: Multicolored dashed lines??? By: Haje Korth on Thu, 22 September 2005 05:23
		Re: Multicolored dashed lines??? By: David Fanning on Wed, 21 September 2005 20:23
		Re: Multicolored dashed lines??? By: Andrew Cool on Wed, 21 September 2005 20:10
		Re: Multicolored dashed lines??? By: David Fanning on Wed, 21 September 2005 19:55
		Re: Multicolored dashed lines??? By: Andrew Cool on Wed, 21 September 2005 19:43

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