Re: [Gnuplot-info] Logarithmically Spaced Points

[Matthew C. <mp...@gm...>]

John,

Thanks for the reply. To be clear, I am not referring to the tics on the 
x-axis, but the points on a linespoints curve in the graph. 
Specifically, I want to be able to set the point interval for the points 
on the line in an exponential fashion, rather than a linear option for 
"point interval". In other words, if I have have 1000 (x,y) points to 
plot, I would like a linespoints curve with point markers at (x1,y1), 
(x10,y10), (x100,y100), (x1000,y1000).Is it possible to do that?

Thanks,
Matthew

On 03/13/2015 06:34 PM, BBands wrote:
> Sure, see 'help set xtics'
>
> "The implicit <start>, <incr>, <end> form specifies that a series of tics will
>   be plotted on the axis between the values <start> and <end> with an increment
>   of <incr>.  If <end> is not given, it is assumed to be infinity.  The
>   increment may be negative.  If neither <start> nor <end> is given, <start> is
>   assumed to be negative infinity, <end> is assumed to be positive infinity,
>   and the tics will be drawn at integral multiples of <incr>.  If the axis is
>   logarithmic, the increment will be used as a multiplicative factor."
>
>       John
>
> On Fri, Mar 13, 2015 at 2:39 PM, Matthew Clay <mp...@gm...> wrote:
>> Hi,
>>
>> I am using the epslatex terminal available in gnuplot for making plots.
>> I am plotting data on a linear y axis and logarithmic x axis. I would
>> like to plot the data with linespoints so the different curves can
>> easily be differentiated from one another. Specifying the point interval
>> option, however, does not look very good on a logarithmic x axis,
>> because for large x values you essentially get many points overlapping
>> each other. Is it possible to use a logarithmically-spaced point
>> interval, so that points will become evenly spaced in the x direction on
>> a logarithmic x axis? To give an example, instead of point every 10
>> units (which will become very crowded for x > 100), can I place the
>> points at x=1,10,100,1000,10000?

-- 
Matthew Clay
Graduate Student
Aerospace Engineering
Georgia Institute of Technology
mp...@gm... or 205.212.4027