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From: HansBernhard Bröker <HBB<roeker@t...>  20081031 22:12:39

1sezgin wrote: > Yes, you are right. > Because of knowing the problem it was clear for me. > > I have one column with many lines and I want to read every 1000 line as one > data set. Well, then maybe you should have a look at "help every". :> 
From: 1sezgin <1sezgins@gm...>  20081031 12:24:01

Yes, you are right. Because of knowing the problem it was clear for me. I have one column with many lines and I want to read every 1000 line as one data set. I hope now I am clear. Thanks 1 2 3 ... 1000 1 2 3 4 ... 1000 HansBernhard Bröker2 wrote: > > 1sezgin wrote: > >> I have a binary data (integer) which has only one line and every 1000 >> line >> is another histogram. >> Is it possible to tell gnuplot to plot every 1000 line as another line in >> histogram. > > Sorry, but you're not making any sense at all. You have used the word > "line" in at least 3 different meanings, without leaving any hint what > the difference between those is. > >  > This SF.Net email is sponsored by the Moblin Your Move Developer's > challenge > Build the coolest Linux based applications with Moblin SDK & win great > prizes > Grand prize is a trip for two to an Open Source event anywhere in the > world > http://moblincontest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Gnuplotinfo mailing list > Gnuplotinfo@... > https://lists.sourceforge.net/lists/listinfo/gnuplotinfo > >  View this message in context: http://www.nabble.com/Binarydatahistogramtp20227161p20264863.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: HansBernhard Bröker <HBB<roeker@t...>  20081031 01:22:54

1sezgin wrote: > I have a binary data (integer) which has only one line and every 1000 line > is another histogram. > Is it possible to tell gnuplot to plot every 1000 line as another line in > histogram. Sorry, but you're not making any sense at all. You have used the word "line" in at least 3 different meanings, without leaving any hint what the difference between those is. 
From: 1sezgin <1sezgins@gm...>  20081029 13:31:13

Dear news group, I have a binary data (integer) which has only one line and every 1000 line is another histogram. Is it possible to tell gnuplot to plot every 1000 line as another line in histogram. In this situation line number should be x value and my data is y value. Sezgin  View this message in context: http://www.nabble.com/Binarydatahistogramtp20227161p20227161.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Thomas Sefzick <t.sefzick@fz...>  20081029 11:55:56

a) you are using 'set xdata time'. so the origin of the coordinate system is ("01/01/2000" , 0). that means that the point where 'c' is calculated (point of origin) is far off the point where your data are: appr. +2.8e+8 seconds. this can not work. for the function f(x)=m*(x2.8e+08) + c the fit behaves a little bit better when setting 'c' to a value near enough to 293255. but in the end it will terminate with the message Singular matrix in Invert_RtR maybe it's because the fit is working at the limit of computational accuracy? i'm not sure about that... b) for data distributed on a horizontal line you should use an appropriate function, e.g. f(x)=a and the fit will converge after 4 steps. > Hi, > I am having some problems with the fit of a straight line. > > I want to get a line of best fit for the 3rd column. > It really should give > for > f(x)=m*x+c > m=0 > c=293255 > > but I get > m=close to 0 > c=1 > > I do not understand how I get a line of best fit that does not fit > What am I doing wrong? > > Thanks > Peter > > data: > 26/08/08 293449 293255 > ... > 29/10/08 296787 293255 > > gnuplot commands: > dataset="data" > set xdata time > set timefmt "%d/%m/%y" > set style data boxes > set style fill solid 1 noborder > set xrange [ "29/07/08":"29/01/09" ] > set title "data" > set xlabel "date" > set ylabel "whatever" > set grid > f(x)=m*x + c > fit [ "29/09/08":"28/10/08" ] f(x) dataset using 1:3 via m,c > plot dataset using 1:2 title "line1", dataset using 1:3 title "line2" , > f(x) title "Trendline" lw 3  View this message in context: http://www.nabble.com/fitfunctionweirdnesstp20218720p20225280.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: HansBernhard Bröker <HBB<roeker@t...>  20081029 11:55:55

peterchun wrote: > Hi, > I am having some problems with the fit of a straight line. > > I want to get a line of best fit for the 3rd column. > It really should give > for > f(x)=m*x+c > m=0 > c=293255 Sorry, but for technical reasons 'fit' fails at finding zeroes as target parameters. The problem is with the way we compute derivatives WRT parameters. Moreover, even if that did work, it also doesn't work well to have fit parameters with wildly different orders of magnitude. Zero is infinitely different from all other numbers in that respect... :( So you'll have to shift the m parameter away from zero. Something like: f(x) = (m2e5)*x + c 
From: 1sezgin <1sezgins@gm...>  20081029 07:46:27

I have a problem with gnuplot. ( Version 4.2 patchlevel 2) With the code which I past belove I produce a 2D color image. I would like to make projection on x axis which mean by using a data like; x y z 1 1 2 1 2 0 1 3 1 1 4 1 2 1 1 2 2 0 2 3 1 2 4 0 3 1 2 3 2 0 3 3 1 3 4 2 as a result of projection I want to draw these new lines (it should sum z values for every y group (from 1 to 4) x new y 1 4 2 2 3 5 is it possible to make this with gnuplot? My goal is to draw one divided graph, which has a color graph up (first data) and projection of first data (second data) like a histogram, down. Sezgin set xlabel 'A1' set ylabel 'B1' set view map #set palette rgbformulae 10,13,33 set palette gray set cbrange [0:5] set xrange [0:3276] set yrange [1638:1638] set term png size 840,840 set output 'image.png' splot 'ASCIIdata.txt' using (0.7*($1+$2)):(0.7*($1$2)):3 notitle with points palette ps 1 pt 5  View this message in context: http://www.nabble.com/Plotanellipseknowingcenterandaxistp20184644p20187190.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: peterchun <peter.chun@ma...>  20081029 00:11:48

Hi, I am having some problems with the fit of a straight line. I want to get a line of best fit for the 3rd column. It really should give for f(x)=m*x+c m=0 c=293255 but I get m=close to 0 c=1 I do not understand how I get a line of best fit that does not fit What am I doing wrong? Thanks Peter data: 26/08/08 293449 293255 10/09/08 296787 293255 12/09/08 296787 293255 15/09/08 296787 293255 17/09/08 296787 293255 18/09/08 296787 293255 19/09/08 296787 293255 20/09/08 296787 293255 21/09/08 296787 293255 22/09/08 296787 293255 23/09/08 296787 293255 24/09/08 296787 293255 25/09/08 296787 293255 26/09/08 296787 293255 27/09/08 296787 293255 28/09/08 296787 293255 29/09/08 296787 293255 30/09/08 296787 293255 01/10/08 296787 293255 02/10/08 296787 293255 03/10/08 296787 293255 04/10/08 296787 293255 05/10/08 296787 293255 06/10/08 296787 293255 07/10/08 296787 293255 08/10/08 296787 293255 09/10/08 296787 293255 10/10/08 296787 293255 11/10/08 296787 293255 12/10/08 296787 293255 13/10/08 296787 293255 14/10/08 296787 293255 15/10/08 296787 293255 16/10/08 296787 293255 17/10/08 296787 293255 18/10/08 296787 293255 19/10/08 296787 293255 20/10/08 296787 293255 21/10/08 296787 293255 22/10/08 296787 293255 23/10/08 296787 293255 24/10/08 296787 293255 25/10/08 296787 293255 26/10/08 296787 293255 27/10/08 296787 293255 28/10/08 296787 293255 29/10/08 296787 293255 gnuplot commands: dataset="data" set xdata time set timefmt "%d/%m/%y" set style data boxes set style fill solid 1 noborder set xrange [ "29/07/08":"29/01/09" ] set title "data" set xlabel "date" set ylabel "whatever" set grid f(x)=m*x + c fit [ "29/09/08":"28/10/08" ] f(x) dataset using 1:3 via m,c plot dataset using 1:2 title "line1", dataset using 1:3 title "line2" , f(x) title "Trendline" lw 3  View this message in context: http://www.nabble.com/fitfunctionweirdnesstp20218720p20218720.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: HansBernhard Bröker <HBB<roeker@t...>  20081027 17:08:41

Santix wrote: > g.load(power.p) > > but it gives me this error: > > Traceback (most recent call last): > File "./spectrum_output.py", line 310, in <module> > main_loop(tb) > File "./spectrum_output.py", line 289, in main_loop > g.load(power.p) > AttributeError: 'file' object has no attribute 'p' I'm reasonably sure that this has absolutely nothing to do with gnuplot. It may have something to do with gnuplot.py  but that's not produced by us. Or it may be a plain an simple mistake in how you used Python. So I can only offer a wild guess: try putting "" around the filename, i.e.: g.load("power.p") 
From: HansBernhard Bröker <HBB<roeker@t...>  20081027 17:04:20

ray.zong wrote: > BREAK: Singular matrix in Invert_RtR [...] > Anyone knows the meaning of that message. The message means that your fit failed. The determination of new parameters failed because the system of equations became invalid. There are several possible reasons for this, but the most probable ones are that your fit parameters are mutually dependent, or that at least one of them just doesn't have any effect on the fit's quality. That's all that can be said without seeing the actual commands and data you used. 
From: 1sezgin <1sezgins@gm...>  20081027 16:17:49

I have a problem with gnuplot. ( Version 4.2 patchlevel 2 ) With the code which I past belove I produce a 2D color image. I would like to make projection on x axis which mean by using a data like; x y z 1 1 2 1 2 0 1 3 1 1 4 1 2 1 1 2 2 0 2 3 1 2 4 0 3 1 2 3 2 0 3 3 1 3 4 2 as a result of projection I want to draw these new lines (it should sum z values for every y group (from 1 to 4) x new y 1 4 2 2 3 5 is it possible to make this with gnuplot? My goal is to draw one divided graph, which has a color graph up (first data) and projection of first data (second data) like a histogram, down. Sezgin set xlabel 'A1' set ylabel 'B1' set view map #set palette rgbformulae 10,13,33 set palette gray set cbrange [0:5] set xrange [0:3276] set yrange [1638:1638] set term png size 840,840 set output 'image.png' splot 'ASCIIdata.txt' using (0.7*($1+$2)):(0.7*($1$2)):3 notitle with points palette ps 1 pt 5  View this message in context: http://www.nabble.com/2Dcolorimageprojectiontp20187336p20187336.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: skuallpa <reusep@gm...>  20081027 15:15:42

Ok it works well know thanks a lot  View this message in context: http://www.nabble.com/Plotanellipseknowingcenterandaxistp20184644p20189537.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Thomas Sefzick <t.sefzick@fz...>  20081027 14:11:33

you need the actual gnuplot version. type 'help matrix ascii' or have a look at http://www.gnuplot.info/docs/node332.html  View this message in context: http://www.nabble.com/remappingmatrixplotaxistp20187248p20188524.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Thomas Sefzick <t.sefzick@fz...>  20081027 13:13:43

> I am new to gnuplot and I need to draw an ellipse on a distribution of data. > I know the center of the ellipse and the semimajor and semiminor axis. > > Has someone some example code ? center of ellipse: xm,ym semimajor axis: a semiminor axis: b for example: xm = 5 ym = 2 a = 2 b = 1 set xrange [1:10] set yrange [1:5] set zeroaxis set parametric fx(t)=xm+a*cos(t) fy(t)=ym+b*sin(t) set arrow 1 from xm,ym to (xm+a),ym set arrow 2 from xm,ym to xm,(ym+b) plot fx(t),fy(t)  View this message in context: http://www.nabble.com/Plotanellipseknowingcenterandaxistp20184644p20187442.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: skuallpa <reusep@gm...>  20081027 10:01:53

Hello, I am new to gnuplot and I need to draw an ellipse on a distribution of data. I know the center of the ellipse and the semimajor and semiminor axis. Has someone some example code ? Thanks in advance  View this message in context: http://www.nabble.com/Plotanellipseknowingcenterandaxistp20184644p20184644.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Maximilian Stein <stein.maximilian@gm...>  20081023 22:46:49

Thank you for your quick replys. It was quite easy. Of course the line starts at (0,1), sorry for that. Because of the logarithmic scale this point can't be printed like all other points with x=0. So this is the reason why gnuplot act strange (in my opinion), it starts at the point (1,0.32) which does't exist, but (0.005,0.32) is the next existing point so 0.32 makes sense in some way. I agree that it would be nicer if gnuplot would ignore zero values on logscales or print an error. When I delete all x=0 values it works fine. The zero values have no relevance for this chart either. Thanks again for your quick replys. P.S.: 0e20 means 0 times 10 to the power of 20 (0*10^20) so it's 0 (in the db and in my python script it is zero, i don't know why it's exported like that). P.P.S.: 0 to the power of anything is 0. Except 0^0, that's 1 (per definition)  View this message in context: http://www.nabble.com/Errorincurvewhenplottingonreverselogarithmicxaxistp20131291p20141059.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: HansBernhard Bröker <HBB<roeker@t...>  20081023 22:13:24

Maximilian Stein wrote: > The line starts at point 0:1 (coordinate origin) No. It actually _ends_ there, and that's (1,0), not (0,1): x is 1, y is 0. > and is printed correctly > until the last point. But from there it returns horizontally to the yaxis > to the point 0:<last printed ycoordinate>. Where else did you expect it to go? The x coordinate for the first 20 data points or so is not only outside your given range, but completely invalid on a logarithmic axis. Zero has no place on such an axis. 
From: Dieter Jurzitza <dieter.jurzitza@t...>  20081023 19:31:05

Dear Maximilian, I have looked into your example and I can tell you what went wrong: what is 0e20? This is not a number, what is 0 to the power of 20? Replace your 0E20 by 1.0E20 and everything will work. No program can display 0 on a logarithmic axes, so I think gnuplot defaults to some value that is manageable to some extent. By the way: do you really want data to accumulate at a point far out of your graph? Good you provided such an example so it was easy to help! Finally: maybe gnuplot could spit out a warning about an undefined value or whatever  I guess the data parsing routine does some emergency handling without moaning given it is forced to process such  admittently erratic  data values. Hope this helps, take care Dieter Jurzitza    \ /\_/\   ~x~ /\ / \ / \_/ ^^__ _ / _ ____ / <°°__ \ \_/  /     _ _ _ _ if you really want to see the pictures above  use some font with constant spacing like courier! :) Am Donnerstag, 23. Oktober 2008 15:46:29 schrieb Maximilian Stein: > set terminal emf color dashed font "arial,12" size 800,600 > set output "not_correct.emf" > set grid lt 28 > set logscale x > set xrange [1e4:1] reverse > set yrange [0:1] > set key box reverse Left top right spacing 1.5 > plot '' title "Data" with lines lt 1 lw 3 
From: Santix <santiortega2000@gm...>  20081023 16:05:00

 View this message in context: http://www.nabble.com/DoaGnuplottp20133793p20133793.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Santix <santiortega2000@gm...>  20081023 16:04:52

I am doing a python program that save the data in a text file in columns and I want to do a gnuplot to plot the results. But I want the program in python to show the result with gnuplot. I have tried this: g.load(power.p) but it gives me this error: Traceback (most recent call last): File "./spectrum_output.py", line 310, in <module> main_loop(tb) File "./spectrum_output.py", line 289, in main_loop g.load(power.p) AttributeError: 'file' object has no attribute 'p' On power.p I have this: set autoscale unset logscale unset label set xtic auto set ytic auto set title "Spectrum Analyzer" set xlabel "Frecuency" set ylabel "Power (dB)" plot "power.dat" using 1:2 title 'm.data[0]' with linespoints And in power.dat: 2231500000.0 18.2582263947 2234500000.0 17.0396003723 ... ... with more data It goes ok when I load it in gnuplot, but not when I execute the python program in the Terminal. Thanks in advance! Regards, Santiago Ortega.  View this message in context: http://www.nabble.com/DoaGnuplotofafileinpythontp20133953p20133953.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Maximilian Stein <stein.maximilian@gm...>  20081023 13:46:44

Hi everybody, I have to create a line chart with a reverse logarithmic xaxis starting at 1 becoming smaller (to 1e4). I read the coordinate data from a database, print the configuration and data to a file and then plot it with gnuplot. The line starts at point 0:1 (coordinate origin) and is printed correctly until the last point. But from there it returns horizontally to the yaxis to the point 0:<last printed ycoordinate>. The chart:  http://www.nabble.com/file/p20131291/not_correct.emf not_correct.emf  Here's the file I use to plot the chart:  set terminal emf color dashed font "arial,12" size 800,600 set output "not_correct.emf" set grid lt 28 set logscale x set xrange [1e4:1] reverse set yrange [0:1] set key box reverse Left top right spacing 1.5 plot '' title "Data" with lines lt 1 lw 3 0E20 1.00000000000000000000 0E20 1.00000000000000000000 0E20 0.52000000000000000000 0E20 0.52000000000000000000 0E20 0.52000000000000000000 0E20 0.52000000000000000000 0E20 0.50000000000000000000 0E20 0.50000000000000000000 0E20 0.50000000000000000000 0E20 0.50000000000000000000 0E20 0.50000000000000000000 0E20 0.46000000000000000000 0E20 0.44000000000000000000 0E20 0.44000000000000000000 0E20 0.44000000000000000000 0E20 0.44000000000000000000 0E20 0.42000000000000000000 0E20 0.42000000000000000000 0E20 0.42000000000000000000 0E20 0.42000000000000000000 0E20 0.42000000000000000000 0E20 0.40000000000000000000 0E20 0.40000000000000000000 0E20 0.40000000000000000000 0E20 0.40000000000000000000 0E20 0.40000000000000000000 0E20 0.40000000000000000000 0E20 0.40000000000000000000 0E20 0.40000000000000000000 0E20 0.36000000000000000000 0E20 0.36000000000000000000 0E20 0.36000000000000000000 0E20 0.34000000000000000000 0E20 0.34000000000000000000 0E20 0.34000000000000000000 0E20 0.34000000000000000000 0E20 0.34000000000000000000 0E20 0.34000000000000000000 0.00500000000000000000 0.32000000000000000000 0.00500000000000000000 0.30000000000000000000 0.00500000000000000000 0.30000000000000000000 0.01000000000000000000 0.26000000000000000000 0.01000000000000000000 0.26000000000000000000 0.03000000000000000000 0.24000000000000000000 0.03000000000000000000 0.24000000000000000000 0.03000000000000000000 0.24000000000000000000 0.04000000000000000000 0.24000000000000000000 0.10000000000000000000 0.20000000000000000000 0.18000000000000000000 0.16000000000000000000 0.26000000000000000000 0.14000000000000000000 0.45500000000000000000 0.12000000000000000000 0.45500000000000000000 0.12000000000000000000 0.64000000000000000000 0.04000000000000000000 0.80500000000000000000 0.04000000000000000000 0.80500000000000000000 0.04000000000000000000 1.00000000000000000000 0E20 e  I'm quite new to gnuplot and I have no idea how to fix this. Any help is very appreciated Maximilian Stein  View this message in context: http://www.nabble.com/Errorincurvewhenplottingonreverselogarithmicxaxistp20131291p20131291.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Tai Viinikka <tai@ea...>  20081021 17:07:37

Hi gnuplot gurus! I'm graphing a value which is measured in different units in different countries, but the units are easy to convert with a simple division by 293.071. How can I arrange to plot accurately against Y1 in one unit and Y2 in the other? I have tried graphing the same data twice (divided by the constant in one case), but the scaling is not exactly the same so the Y1 and Y2 tics do not agree. A second problem with this approach is that I need to make some of the points invisible. Thoughts? I feel like this should be something I can solve myself, but I haven't figure out how yet. Pointers or suggestions very welcome. tai viinikka  tai = tai@... ::: We are moving as fast as we can ::: across the dangerous surface of ::: the world. Candas Jane Dorsey 
From: Sylvain Bertrand <sylvain.bertrand@gm...>  20081021 12:44:05

Hi all, Is it possible to provide time/date data to gnuplot from a binary data file? The time data would be 32 bits or 64 bits time_ts. regards, Sylvain  Code in C only, use GPL licensed only software, use GNU/Linux and secure your digital freedom! 
From: ray.zong <zxr88826@gm...>  20081017 16:16:41

Hi everyone. I was using gnuplot to fit some data points into an equation. However, I encountered this message BREAK: Singular matrix in Invert_RtR and no actual result shows. Anyone knows the meaning of that message. thanks. xuanran  View this message in context: http://www.nabble.com/BREAK%3ASingularmatrixinInvert_RtRtp20036467p20036467.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 
From: Thomas Sefzick <t.sefzick@fz...>  20081017 09:17:17

> Thanks for the help! > > Two more questions... > > Is it possible to get a zscale where "" is "up"? set zrange [*:*] reverse > Does anyone have a nice palette? I usually use the > "standard" or "set palette defined (3 "blue", 0 "white", 1 "red")"? have a look at 'help palette' and then see what the actual palette looks like with 'test palette'.  View this message in context: http://www.nabble.com/Problemwithsplottp19970779p20029493.html Sent from the Gnuplot  User mailing list archive at Nabble.com. 