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From: Thomas S. <t.s...@fz...> - 2010-05-16 11:37:46
|
you are using an older version of gnuplot, not the actual one. use this command instead: plot fx(t,359.) , fy(t,359.) notitle, fx(t,0.) , fy(t,0.) notitle, fx(t,1.) , fy(t,1) notitle James00007 wrote: > > > Hi, > > The script does not work, i.e > > plot for [i=0:359] fx(t,i) , fy(t,i) notitle > > gives an error message. > > I didnt know that for statements existed in gnuplot but it may be that u > just gave my the pseudo code. > Guess I have asked you enough and need to do a few things myself! > > > > -- View this message in context: http://old.nabble.com/Plotting-lines-represented-by-%28r%2C-theta%29-tp28554781p28574133.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: James00007 <ach...@gm...> - 2010-05-16 05:49:02
|
Hi, The script does not work, i.e plot for [i=0:359] fx(t,i) , fy(t,i) notitle gives an error message. I didnt know that for statements existed in gnuplot but it may be that u just gave my the pseudo code. Guess I have asked you enough and need to do a few things myself! -- View this message in context: http://old.nabble.com/Plotting-lines-represented-by-%28r%2C-theta%29-tp28554781p28572793.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: Thomas S. <t.s...@fz...> - 2010-05-15 14:50:40
|
a simple example: xoffset=1. yoffset=3. set zeroaxis set parametric set xrange [-4:6] set yrange [-2:8] set trange [-4:4] set angles degree fx(t,phi)=xoffset+t*sin(phi) fy(t,phi)=yoffset+t*cos(phi) plot for [i=0:359] fx(t,i) , fy(t,i) notitle Hi Thomas, Thanks for help again...but I`m afraid I need more of it! I`ve had a look at parametric mode and I can plot vertical lines using this example: http://t16web.lanl.gov/Kawano/gnuplot/parametric-e.html But I need to plot a nearly vertical line through a point (x,y) with a (steep) gradient of m. Do you have any idea how the plot command will look like now (taking into account the point (x,y) and gradient m?) Hope I`m not asking too much! Thanks Thomas Sefzick wrote: > > you may use 'parametric mode' > http://www.gnuplot.info/docs_4.2/gnuplot.html#x1-14400034.4 > > > -- View this message in context: http://old.nabble.com/Plotting-lines-represented-by-%28r%2C-theta%29-tp28554781p28568882.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: James00007 <ach...@gm...> - 2010-05-15 05:59:21
|
Hi Thomas, Thanks for help again...but I`m afraid I need more of it! I`ve had a look at parametric mode and I can plot vertical lines using this example: http://t16web.lanl.gov/Kawano/gnuplot/parametric-e.html But I need to plot a nearly vertical line through a point (x,y) with a (steep) gradient of m. Do you have any idea how the plot command will look like now (taking into account the point (x,y) and gradient m?) Hope I`m not asking too much! Thanks you may use 'parametric mode' http://www.gnuplot.info/docs_4.2/gnuplot.html#x1-14400034.4 -- View this message in context: http://old.nabble.com/Plotting-lines-represented-by-%28r%2C-theta%29-tp28554781p28566458.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: zweifel <zw...@gm...> - 2010-05-14 22:20:37
|
How do I supply data errors for fit to work with? 2010/5/14 Hans-Bernhard Bröker <HBB...@t-...> > zweifel wrote: > > I plotted a function with a regression and it worked fine as it could be >> seen on the figure out2.png, but when I tried to plot this same function >> with logscale, that is, I just added "set logscale xy" to my script, then >> the out.png appeared. But it did not seem right. >> > > On what basis did you draw this conclusion? What exactly did "not seem > right" about it? > > > fit f(x) "comparison" using 1:2 via e,a >> fit g(x) "comparison" using 1:3 via d,k2 >> fit h(x) "comparison" using 1:4 via c,k3 >> > > The most likely problem to be found here is that these fit commands don't > supply data errors for fit to work with. Your expectation is probably based > on assumptions about how 'fit' weights distances between data and model > (particularly in the absence of data errors) that just don't hold. > > Note that 'set logscale' is a plot setting. It does not affect 'fit at > all. > > -- Danilo |
|
From: exprexxo <exp...@gm...> - 2010-05-14 21:35:44
|
Perfect that was exactly what I needed to make the example even better, So here is a Circle Example that does a Venn diagram with a red, blue and a green colored circle set title "A Venn Diagram" unset border unset xtics unset ytics set size ratio -1 set xrange [-10:10] set yrange [-10:10] plot '-' using 1:2:3:4 with circles lc rgb variable fs transparent solid 0.15 noborder 2 2 4 167116800 -2 2 5 65280 0 -2 5 255 e -- View this message in context: http://old.nabble.com/How-to-dynamically-specify-color-for-drawing-circle-in-Gnuplot4.3-tp21376845p28564508.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: Thomas S. <t.s...@fz...> - 2010-05-14 20:27:33
|
rgbcolors are made of 3 components - red, green, and blue, represented as hexadecimal values: #RRGGBB the 3 color values are in the range 0-255, so the rgbcolor as a decimal value is: 65536 * red + 256 * green + blue you read in this decimal value in your plot command, a value of '200' means that the red and green components are zero - the number is too small - so the circle is blue. some rgbcolor value examples: red: 65536*255 = 16711680 green: 256*255 = 65280 blue: 255 instead of rgbcolors you could use a color palette: plot ... linecolor palette ... exprexxo wrote: > > Here is another example without a file > > set title "A Venn Diagram" > unset border > unset xtics > unset ytics > set size ratio -1 > set xrange [-10:10] > set yrange [-10:10] > plot '-' using 1:2:3:4 with circles lc rgb variable fs transparent solid > 0.15 noborder > 2 2 4 1 > -2 2 5 200 > 0 -2 5 3 > e > > However I can not figure out what numbers I should be using for RGB other > than 200 gives me blue. > -- View this message in context: http://old.nabble.com/How-to-dynamically-specify-color-for-drawing-circle-in-Gnuplot4.3-tp21376845p28563985.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: Hans-Bernhard B. <HBB...@t-...> - 2010-05-14 19:44:25
|
zweifel wrote: > I plotted a function with a regression and it worked fine as it could be > seen on the figure out2.png, but when I tried to plot this same function > with logscale, that is, I just added "set logscale xy" to my script, then > the out.png appeared. But it did not seem right. On what basis did you draw this conclusion? What exactly did "not seem right" about it? > fit f(x) "comparison" using 1:2 via e,a > fit g(x) "comparison" using 1:3 via d,k2 > fit h(x) "comparison" using 1:4 via c,k3 The most likely problem to be found here is that these fit commands don't supply data errors for fit to work with. Your expectation is probably based on assumptions about how 'fit' weights distances between data and model (particularly in the absence of data errors) that just don't hold. Note that 'set logscale' is a plot setting. It does not affect 'fit at all. |
|
From: exprexxo <exp...@gm...> - 2010-05-14 19:01:15
|
Here is another example without a file set title "A Venn Diagram" unset border unset xtics unset ytics set size ratio -1 set xrange [-10:10] set yrange [-10:10] plot '-' using 1:2:3:4 with circles lc rgb variable fs transparent solid 0.15 noborder 2 2 4 1 -2 2 5 200 0 -2 5 3 e However I can not figure out what numbers I should be using for RGB other than 200 gives me blue. -- View this message in context: http://old.nabble.com/How-to-dynamically-specify-color-for-drawing-circle-in-Gnuplot4.3-tp21376845p28563176.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: zweifel <zw...@gm...> - 2010-05-14 13:37:54
|
Sorry, here are the 2 images: http://img268.imageshack.us/img268/5110/outb.png http://img175.imageshack.us/img175/9812/out2.png 2010/5/14 Thomas Sefzick <t.s...@fz...> > > please append the two figures 'out.png' and 'out2.png' > > > Danilo Vargas wrote: > > > > Hi guys, > > > > I plotted a function with a regression and it worked fine as it could be > > seen on the figure out2.png, but when I tried to plot this same function > > with logscale, that is, I just added "set logscale xy" to my script, then > > the out.png appeared. But it did not seem right. > > > > I am also pasting my script below: > > #!/usr/bin/gnuplot > > reset > > set logscale xy > > set xlabel "Problem Size" > > set ylabel "Function Evaluations" > > set terminal postscript enhanced > > set style data points > > set samples 1000 > > set origin 0,0 > > set title > > f(x) = (a)*(x**e)*(log(x)/log(2)) > > g(x) = (k2)*(x**d)*(log(x)/log(2)) > > h(x) = (k3)*(x**c)*(log(x)/log(2)) > > fit f(x) "comparison" using 1:2 via e,a > > fit g(x) "comparison" using 1:3 via d,k2 > > fit h(x) "comparison" using 1:4 via c,k3 > > > > plot [:][:] "comparison" using 1:2 noti "ECGA", \ > > f(x) title "ECGA: O(m^{1.92}*log_2(m))", \ > > "comparison" using 1:3 notitle "PhGA-a", \ > > g(x) title "PhGA-a: O(m^{1.18}*log_2(m))", \ > > "comparison" using 1:4 notitle "PhGA-b", \ > > h(x) title "PhGA-b: O(m^{0.99}*log_2(m))" > > > > Thanks in advance, > > -- > > > > Danilo > > > > > ------------------------------------------------------------------------------ > > > > > > _______________________________________________ > > gnuplot-info mailing list > > gnu...@li... > > https://lists.sourceforge.net/lists/listinfo/gnuplot-info > > > > > > -- > View this message in context: > http://old.nabble.com/Log-scale-not-working--tp28554706p28559212.html > Sent from the Gnuplot - User mailing list archive at Nabble.com. > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > gnuplot-info mailing list > gnu...@li... > https://lists.sourceforge.net/lists/listinfo/gnuplot-info > -- Danilo |
|
From: Thomas S. <t.s...@fz...> - 2010-05-14 13:28:25
|
you may use 'parametric mode' http://www.gnuplot.info/docs_4.2/gnuplot.html#x1-14400034.4 James00007 wrote: > > Hi, > > I needed to plot straight lines and I can do this generally using the form > y=mx+c > > However, almost-vertical lines give rise to unbounded values of m and c > and hence > they can not be plotted. For this reason, I have to represent lines the > Hough Transform way i.e (r, theta) > > How can I plot lines that are represented by (r, theta)? This is just a > representation and not an equation. > > Thanks > -- View this message in context: http://old.nabble.com/Plotting-lines-represented-by-%28r%2C-theta%29-tp28554781p28559365.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: Thomas S. <t.s...@fz...> - 2010-05-14 13:16:55
|
please append the two figures 'out.png' and 'out2.png'
Danilo Vargas wrote:
>
> Hi guys,
>
> I plotted a function with a regression and it worked fine as it could be
> seen on the figure out2.png, but when I tried to plot this same function
> with logscale, that is, I just added "set logscale xy" to my script, then
> the out.png appeared. But it did not seem right.
>
> I am also pasting my script below:
> #!/usr/bin/gnuplot
> reset
> set logscale xy
> set xlabel "Problem Size"
> set ylabel "Function Evaluations"
> set terminal postscript enhanced
> set style data points
> set samples 1000
> set origin 0,0
> set title
> f(x) = (a)*(x**e)*(log(x)/log(2))
> g(x) = (k2)*(x**d)*(log(x)/log(2))
> h(x) = (k3)*(x**c)*(log(x)/log(2))
> fit f(x) "comparison" using 1:2 via e,a
> fit g(x) "comparison" using 1:3 via d,k2
> fit h(x) "comparison" using 1:4 via c,k3
>
> plot [:][:] "comparison" using 1:2 noti "ECGA", \
> f(x) title "ECGA: O(m^{1.92}*log_2(m))", \
> "comparison" using 1:3 notitle "PhGA-a", \
> g(x) title "PhGA-a: O(m^{1.18}*log_2(m))", \
> "comparison" using 1:4 notitle "PhGA-b", \
> h(x) title "PhGA-b: O(m^{0.99}*log_2(m))"
>
> Thanks in advance,
> --
>
> Danilo
>
> ------------------------------------------------------------------------------
>
>
> _______________________________________________
> gnuplot-info mailing list
> gnu...@li...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-info
>
>
--
View this message in context: http://old.nabble.com/Log-scale-not-working--tp28554706p28559212.html
Sent from the Gnuplot - User mailing list archive at Nabble.com.
|
|
From: Thomas S. <t.s...@fz...> - 2010-05-14 13:11:35
|
to jitter x-values just add a random number between -0.5 and 0.5 scaled with a fixed value: w=0.4 plot "myfile" using ($1+w*(rand(0)-0.5)):2 marcel1 wrote: > > Hello users, > I would like to plot data which have various Y values, but share only one > of two possible x values. to better distinguish datapoints, I would like > to "jitter" the x values slightly (ie add some random noise to the x > value). I have looked a lot online, found only a very sparse entry in > "gnuplot in action" which suggests the following command: > >>plot "myfile" u 1:(0.25*rand(0)-.35) > > I understand how rand(0) could help, but can't quite figure out how to > generalize from this to use in my plot instructions which have the form > >> plot "myfile" u 1:2 #the 1 data column contains 1s and 2s > > so, >>plot "myfile" u rand(0)*1:2 > > Strangely, this yields x-values up to 50 whereas i would have expected > either 1 or 2 times some random decimal <1. > >>plot "myfile" u 1*(rand(0):2 # and various other permutations also bad > > Clearly I am missing something. Any suggestions welcome. > > Thanks, > marcel > > -- View this message in context: http://old.nabble.com/Help-plotting-%22jittered%22-datapoints-tp28552513p28559149.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: James00007 <ach...@gm...> - 2010-05-14 03:05:22
|
Hi, I needed to plot straight lines and I can do this generally using the form y=mx+c However, almost-vertical lines give rise to unbounded values of m and c and hence they can not be plotted. For this reason, I have to represent lines the Hough Transform way i.e (r, theta) How can I plot lines that are represented by (r, theta)? This is just a representation and not an equation. Thanks -- View this message in context: http://old.nabble.com/Plotting-lines-represented-by-%28r%2C-theta%29-tp28554781p28554781.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
|
From: zweifel <zw...@gm...> - 2010-05-14 02:50:01
|
Hi guys,
I plotted a function with a regression and it worked fine as it could be
seen on the figure out2.png, but when I tried to plot this same function
with logscale, that is, I just added "set logscale xy" to my script, then
the out.png appeared. But it did not seem right.
I am also pasting my script below:
#!/usr/bin/gnuplot
reset
set logscale xy
set xlabel "Problem Size"
set ylabel "Function Evaluations"
set terminal postscript enhanced
set style data points
set samples 1000
set origin 0,0
set title
f(x) = (a)*(x**e)*(log(x)/log(2))
g(x) = (k2)*(x**d)*(log(x)/log(2))
h(x) = (k3)*(x**c)*(log(x)/log(2))
fit f(x) "comparison" using 1:2 via e,a
fit g(x) "comparison" using 1:3 via d,k2
fit h(x) "comparison" using 1:4 via c,k3
plot [:][:] "comparison" using 1:2 noti "ECGA", \
f(x) title "ECGA: O(m^{1.92}*log_2(m))", \
"comparison" using 1:3 notitle "PhGA-a", \
g(x) title "PhGA-a: O(m^{1.18}*log_2(m))", \
"comparison" using 1:4 notitle "PhGA-b", \
h(x) title "PhGA-b: O(m^{0.99}*log_2(m))"
Thanks in advance,
--
Danilo
|
|
From: marcel1 <cemarcel@u.washington.edu> - 2010-05-13 20:55:11
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Hello users, I would like to plot data which have various Y values, but share only one of two possible x values. to better distinguish datapoints, I would like to "jitter" the x values slightly (ie add some random noise to the x value). I have looked a lot online, found only a very sparse entry in "gnuplot in action" which suggests the following command: >plot "myfile" u 1:(0.25*rand(0)-.35) I understand how rand(0) could help, but can't quite figure out how to generalize from this to use in my plot instructions which have the form > plot "myfile" u 1:2 #the 1 data column contains 1s and 2s so, >plot "myfile" u rand(0)*1:2 Strangely, this yields x-values up to 50 whereas i would have expected either 1 or 2 times some random decimal <1. >plot "myfile" u 1*(rand(0):2 # and various other permutations also bad Clearly I am missing something. Any suggestions welcome. Thanks, marcel -- View this message in context: http://old.nabble.com/Help-plotting-%22jittered%22-datapoints-tp28552513p28552513.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
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From: <she...@be...> - 2010-05-13 20:54:54
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Hello I have a script which uses the gnuplot commands: plot 'foo.dat' matrix with image to plot some 2D image data which is stored in the file foo.dat as a 2D set of data. Using a 3D data (a series of such 2D images) file I would like to be able to "flip" through (perhaps with a button clicks) this series of plotted 2D images. Can somebody help me accomplish this? Thank you, Daniel |
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From: Nicholas K. <n....@us...> - 2010-05-13 14:27:06
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Okay, thank you for your response. I will reduce the dataset to a more meaningful size. Nicholas On 10-05-13 6:16 AM, Hans-Bernhard Bröker wrote: > Nicholas Kinar wrote: > >> I would like to create a dataset which is represented in an ASCII >> file as a large 2D matrix. The matrix has hundreds of columns and >> thousands of rows. I expect that the file will take up at least a >> few gigabytes of space. >> >> Is there a way to represent this matrix as a pm3d map without having >> to let gnuplot load all of the data? > > No. You'll have to reduce that dataset to a manageable size outside > gnuplot. gnuplot is a plotting program, not a general-purpose data > processing engine. > |
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From: Hans-Bernhard B. <HBB...@t-...> - 2010-05-13 12:35:36
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seba881 wrote: > The picture which I was inserted was did in gnuplot 3.7 by someone. ... and it also has completely different data points. Just because somebody managed to fit a tangent curve to one dataset doesn't mean you can fit one to whichever dataset you find. It doesn't even necessarily mean that the fit this person did is meaningful --- at 4 parameters from 10 data points, and quite visible deviation, it just as well could be a fluke. |
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From: Hans-Bernhard B. <HBB...@t-...> - 2010-05-13 12:31:45
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Nicholas Kinar wrote: > I would like to create a dataset which is represented in an ASCII file > as a large 2D matrix. The matrix has hundreds of columns and thousands > of rows. I expect that the file will take up at least a few gigabytes > of space. > > Is there a way to represent this matrix as a pm3d map without having to > let gnuplot load all of the data? No. You'll have to reduce that dataset to a manageable size outside gnuplot. gnuplot is a plotting program, not a general-purpose data processing engine. |
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From: seba881 <se...@gm...> - 2010-05-13 11:49:46
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Hi, The picture which I was inserted was did in gnuplot 3.7 by someone. But i have only his plot to old report, I don't know this person. -- View this message in context: http://old.nabble.com/fitting-tangent-to-plot-tp28534610p28546534.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |
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From: Hans-Bernhard B. <HBB...@t-...> - 2010-05-13 11:10:02
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seba881 wrote: > Hi, I'm very new in gnuplot, how i can fit function tan(x) to this points? You can't, because tan(x) has no adjustable parameters. And you can't because that data doesn't have the shape of a (rescaled and shifted) tangent curve at all. |
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From: Hans-Bernhard B. <HBB...@t-...> - 2010-05-13 11:02:08
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marcel1 wrote: > While my plots print out fine, I am experiencing behavior that i don't > understand with the labels. I can get labels to appear on all of the plots, > but I also get a "duplicate" label A That's almost certainly caused by a misunderstanding of what 'multiplot' and 'set label' actually do. The key is that a 'set label' command affects _all_ plots following it. Yes, that means the label you set for the first plot of your multiplot will also appear in the other three, and so on. Which you may or may not want. In the case at hand, you don't want it, so you should turn off the labels between individual plots. See 'help unset label'. > when I comment out labels that appear later in the code and use >show label > I get: > label 1 "C" at (0.72, -33, 0) left not rotated back font "arial, 16" > nopoint > label 3 "A" at (0.72, 28, 0) left not rotated back font "arial, 16" > nopoint > > which is what I would want. Actually, it's what you _don't_ want. |
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From: Tatsuro M. <tma...@ya...> - 2010-05-12 23:25:02
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Hello Kyoko Makino san Your information is to be very important to windows 7 users. Therefore I am sending this reply to gnuplot-info post by cc. It is stored the gnuplot ML archives on the SourceForge and also the some external service like the Nabble. One may access the information using search engine like the Google. I really appreciate for your detailed information for the matter. Regards Tatsuro --- Kyoko Makino wrote: Hello Tatsuro Matsuoka san, afterward I had yet a different experience about the topic on the gnuplot help file, so I would like to share it with you. We just purchased several Windows 7 computers to upgrade our office computer environment. The gnuplot installation to the first machine went as I reported earlier. Now, the installation to the second machine indeed required to "remove the access block". For the first machine, I installed gnuplot as one user with administrative privilege. On the other hand, for the second machine, I installed gnuplot as "Administrator". As I guess, probably this difference caused the different behavior in Windows 7. With my new attempt of installing gnuplot, first I had to install the Microsoft genuine fixing package for WinHlp32.exe. This went in the same way as the first successful case. Afterward, I had trouble accessing wgnuplot.hlp properly for the gnuplot help menu. To resolve it, I had to "unblock" the security setup of wgnuplot.hlp. This went as follows. Right click of wgnuplot.hlp -Properties -General -[At the bottom of the General tab page] "Security: This file came from another computer and might be blocked to help protect this computer. [Unblock]" [Press this [Unblock] button.] An odd thing is that this [Unblock] button and the entire description of "Security: ..." do not exist in the General tab page when the file is "Unblock"ed. So, for my first gnuplot installation attempt, I didn't see it at all. For my second gnuplot installation attempt, the button is there and I had to remove it by pressing "[Unblock]" button. Also, I did the same thing for wgnuplot.exe and gnuplot.exe as well. Best regards, Kyoko Makino > > > > -----Original Message----- > Hello > > I am glad to hear your success. > I also appreciate your detailed reports. > > At least for the cvs version (currently it is gnuplot 4.5), I will keep > current distribution style. > The cvs version is updated very frequently so that I would like to save my > time for packaging. In > addition, the cvs version is maily for the power users but not for elemetary > users. > > For the official version, it is better to disscuss the distribution style in > the gnuplot-beta ML. > > I admit that NSIS installer is useful for elementary users but I myself do > not want to work on it. > (The GnuWin32 sofware has installer package and zip package. I have selected > zip package because it > does not use registry and very useful to install into the usb drive.) > > I hope that some windows power users will to make efforts to create the NSIS > packages. > > Regards > > Tatsuro > -------------------------------------- 2010 FIFA World Cup News [Yahoo!Sports/sportsnavi] http://pr.mail.yahoo.co.jp/southafrica2010/ |
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From: marcel1 <cemarcel@u.washington.edu> - 2010-05-12 22:06:18
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Using one label and redefining for each plot worked perfectly. Thank you! marcel -- View this message in context: http://old.nabble.com/Trouble-with-labels-in-multiplot-tp28534532p28541655.html Sent from the Gnuplot - User mailing list archive at Nabble.com. |