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• How do I plot the warping of DTW result using gnuplot?

  - by Ekkmanz

  Hello, Right now I have implemented Dynamic Time Warping algorithm for warping two 3D trajectories. Currently, gnuplot is my plotting tool of choice and it works fine when I plot multiple trajectories at a time. However, when I implement DTW one of the real use for plotting tool is to visualize the point warping, like this picture. Currently, the output of my DTW program is two time series in CSV files and another CSV file which indicate the warp (X in series 1 - Y in series 2). Is there any possible way to do that in gnuplot?

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• How can I make a core-plot graph on the phone that doesn't auto-expand to fill the whole superview

  - by Robb

  I'm pretty sure I saw an example where the graph wasn't filling the whole iPhone screen, but I can't get that to happen in my app, nor in the Core-Plot Test app from Switch On The Code. I've added a subview to the original CPLayerHostingView in the sample, then changed the classes – original back to UIView, new subview to CPLayerHostingView, and I've reconnected the File's owner's view outlet to the new subview. When I create a graph with: graph = [[CPXYGraph alloc] initWithFrame: theSubviewOutlet.bounds]; … and step through the first stages of building up the layers the bounds are accurate (i.e. the same as in the .xib) however, when all the initialization is done, and the graph shows up, it fills the whole superview. Am I missing something obvious?

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• Extract data from delinked Excel plot

  - by danny

  I have a Word file which has some Excel plots in it. Unfortunately I lost the original excel plots and the word file is now 'de-linked'. Is there a way to retrieve the lost data for the plots? Just copying the plot back to Excel does not seem to work, but I can see that the data is still there somewhere, because hovering over a dot on the plot shows the values. I have found a solution 1) Unzip the word/powerpoint file 2) go to word/chart/ and open the xml files in Access

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• In R, how to get powers of ten in bold font in a plot label?

  - by wfoolhill

  I want to have "10^4 points" in bold as my x-axis label. I know how to make a simple label in bold: plot(1:10, xlab="") mtext(text="10 points", side=1, font=2, line=3) Thanks to this answer, I know how to make a label with a power of ten but nothing is in bold: mtext(text=expression(paste(10^4, " points")), side=1, font=2, line=3) Thanks to this answer, I also know how to make a label with a Greek letter in bold: mtext(text=expression(bold(paste(beta, "=", 10^1, " points"))), side=1, line=3) But still the power of ten is not in bold! It doesn't work either with bquote: mtext(text=bquote(bold(10^1~points)), side=1, line=3) Any idea? Here are some details about my system. Let me know if you need anything else. > sessionInfo() R version 2.15.0 (2012-03-30) Platform: x86_64-redhat-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base

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• how to plot scatterplot and histogram using R [migrated]

  - by Wee Wang Wang

  I have a dataset about maximum wind speed(cm) as below: Year Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec 2011 4.5 5.6 5.0 5.4 5.0 5.0 5.2 5.3 4.8 5.4 5.4 3.8 2010 4.6 5.0 5.8 5.0 5.2 4.5 4.4 4.3 4.9 5.2 5.2 4.6 2009 4.5 5.3 4.3 3.9 4.7 5.0 4.8 4.7 4.9 5.6 4.9 4.1 2008 3.8 1.9 5.6 4.7 4.7 4.3 5.9 4.9 4.9 5.6 5.2 4.4 2007 4.6 4.6 4.6 5.6 4.2 3.6 2.5 2.5 2.5 3.3 5.6 1.5 2006 4.3 4.8 5.0 5.2 4.7 4.6 3.2 3.4 3.6 3.9 5.9 4.4 2005 2.7 4.3 5.7 4.7 4.6 5.0 5.6 5.0 4.9 5.9 5.6 1.8 How to create monthly max wind speed scatterplot (month in x-axis and wind speed in y-axis) and also the monthly max wind speed histogram by using R programming?

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• Matlab plot inside a loop

  - by Macarse

  I am doing something like this: a = [1:100]; for i=1:100, plot([1:i], a(1:i)); end My issue is that the plot is not shown until the loop is finish. How can I show/update the plot in every iteration?

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• Plot a graph using .NET

  - by veda

  I need to read some data from an input file and plot a graph based on the inputs... I want to plot a graph using visual C#. Is there any in-built functions to plot a graph in visual C#.. If not, how can I do that..

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• Plotting 3-tuple data points in a surface / contour plot using matplotlib

  - by morpheous

  I have some surface data that is generated by an external program as XYZ values. I want to create the following graphs, using matplotlib: Surface plot Contour plot Contour plot overlayed with a surface plot I have looked at several examples for plotting surfaces and contours in matplotlib - however, the Z values seems to be a function of X and Y i.e. Y ~ f(X,Y). I assume that I will somehow need to transform my Y variables, but I have not seen any example yet, that shows how to do this. So, my question is this: given a set of (X,Y,Z) points, how may I generate Surface and contour plots from that data? BTW, just to clarify, I do NOT want to create scatter plots. Also although I mentioned matplotlib in the title, I am not averse to using rpy(2), if that will allow me to create these charts.

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• Polynomial fitting with log log plot

  - by viral parekh

  I have a simple problem to fit a straight line on log-log scale. My code is, data=loadtxt(filename) xdata=data[:,0] ydata=data[:,1] polycoeffs = scipy.polyfit(xdata, ydata, 1) yfit = scipy.polyval(polycoeffs, xdata) pylab.plot(xdata, ydata, 'k.') pylab.plot(xdata, yfit, 'r-') Now I need to plot fit line on log scale so I just change x and y axis, ax.set_yscale('log') ax.set_xscale('log') then its not plotting correct fit line. So how can I change fit function (in log scale) so that it can plot fit line on log-log scale? Thanks -Viral

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• plot matrix missing points in different color using gnuplot

  - by kitt

  I have a file 'matrix.dat': 1 2 3 4 5 5 - 3 4 5 - 4 5 B - 1 B 2 B 3 - 3 2 - 3 I want to plot numbers using palette, '-' using white color and 'B' using black color. In gnuplot, I use this palette (blue - cyan - green - orange - red): set palette model HSV functions 0.666*(1-gray), 1, 1 And set '-' as missing data: set datafile missing "-" plot 'matrix.dat' matrix with image Now I can only plot numbers and '-' in correct colors.

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• Gaps In Plot Of Piecewise Function in Matlab

  - by eng_sub

  Hello, I want to plot a piecewise function, but I don't want any gaps to appear at the junctures, for example: t=[1:8784]; b=(26.045792 + 13.075558*sin(0.0008531214*t - 2.7773943)).*((heaviside(t-2184))-(heaviside(t-7440))); plot(b,'r','LineWidth', 1.5);grid on there should not be any gaps appearing in the plot between the three intervals , but they do. I want the graph to be continueous without gaps. Any suggestions on how to achieve that. Thanks in advance.

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• GNUPlot: plot different ranges with different styles

  - by Mr. Shickadance

  Hello all, I know this should be pretty simple, but I haven't been able to find a similar example. I need to plot different ranges of a datafile differently, but on the same graph. For instance, say my datafile represents a function with x and y values. I want to plot the first N values using a style like lines, and then the next M values using a different style, like points. I was thinking I would need a plot command similar to this: plot [1:5] "my.data" using 1:2 with lines, [6:12] using 1:2 with points, [13:19] using 1:2 with lines Essentially I want to distinguish different areas of the functions. Any ideas? I am sorry if it sounds like I'm rambling but I am quite stumped. Thanks in advance!

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• misleading plot issue in mathematica

  - by Qiang Li

  I want to study some "strange" functions by plotting them out in mathematica. One example is the following: mod2[x_] := Which[Mod[x, 2] >= 1, -2 + Mod[x, 2], True, Mod[x, 2]]; f[x_] := Which[-1 <= x <= 1, Abs[x], True, Abs[mod2[x]]]; fn[x_, n_] := Sum[(3/4)^i*f[4^n*x], {i, 0, n}] Plot[{fn[x, 0], fn[x, 1], fn[x, 2], fn[x, 5]}, {x, -2, 2}] However, the plot I got from mma is misleading, in the sense that the maxima and minima of fn[x, 5] should be on the same two levels. But due to high oscillation of the function, and the fact that clearly mma only takes limited number of points to draw the function, you see the plot exhibit strange behavior. Is there any option in plot to remedy for this? Many thanks.

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• R multi plot log-log Label Problem

  - by ACEnglish

  I'm trying to make a graph of a table and graph it in log space. First of all, plot(dat) gives me the grid of graphs Second of all, plot(dat, log="xy") gives me the correct plots of data in log space However, plot(dat, log="xy") ruins the main diagonal's labels of names(dat) R version 2.11.0

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• Change the size of the text in legend according to the length of the legend vector in the graph

  - by user1021713

  I have to draw a 20 plots and horizontally place a legends in each plots. I gave the following command for the first plot: plot(x=1:4,y=1:4) legend("bottom",legend = c("a","b","c","d"),horiz=TRUE,text.font=2,cex=0.64) then for the second plot I tried : plot(x=1:2,y=1:2) legend("bottom",legend = c("a","b"),horiz=TRUE,text.font=2,cex=0.64) But because the size of the character vector passed to legend argument are different I get the size of the legend different. Since I have to plot so many different plots having varying sizes of legends,I would want to do it in an automated fashion. Is there a way to do this which can fix the size of the legend in all the plots and fit it to graph size?

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• Interpolation of time series data in R

  - by Pierreten

  I'm not sure what i'm missing here, but i'm basically trying to compute interpolated values for a time series; when I directly plot the series, constraining the interpolation points with "interpolation.date.vector", the plot is correct: plot(date.vector,fact.vector,ylab='Quantity') lines(spline(date.vector,fact.vector,xout=interpolation.date.vector)) When I compute the interpolation, store it in an intermediate variable, and then plot the results; I get a radically incorrect result: intepolated.values <- spline(date.vector,fact.vector,xout=interpolation.date.vector) plot(intepolated.values$x,intepolated.values$y) lines(testinterp$x,testinterp$y) Doesn't the lines() function have to execute the spline() function to retrieve the interpolated points in the same way i'm doing it?

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• Finding X on Excel scatter plot/trend line

  - by Wilka

  If I have some data in an scatter plot in Excel, e.g. X Y 1 10 2 20 3 30 4 40 5 50 and I want to find the Y value for X = 10, or X=3.5, or whatever (obviously this is a simplified example) I've been doing the following: Add a trend-line to the scatter plot data Format the trend-line to one that fits the data (linear in this case) Display the equation for the trend-line on the chart Type the equation into an empty cell, replacing x with a cell reference. E.g. "=10*A1" then put my X value into the cell A1 Is there a better way of doing this with Excel? It's quite a few steps, and fairly repetitive. Or maybe Excel is just a poor choice of application for doing this? (I'm using Excel 2007)

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• How to plot survey results on Excel?

  - by Mulone

  Hi all, I would like to plot the average of these data sample: 1. Contribution to the project 2. Affiliation with project owners 3. Level of expertise 4. Learning Curve Yes No 3 2 No No 3 2 No No 4 3 No No 5 3 No No 3 3 Yes Yes 5 4 No No 4 3 No No 3 2 No Yes 2 4 No No 5 2 No Yes 5 No answer No No 2 2 No No 3 3 ... Basically I know how to do the average of each numeric column, but I have a few questions for you: If the column contains non numeric values (e.g. "no answer") the average doesn't work. Is there a workaround for this? How can I count the yes/no results and plot only a percentage? Thanks for any hints! Mulone

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• Excel: Plot order total in map coordinates

  - by Phliplip

  I have a set of data that looks like this: -X--Y----Amount- AE 24 $178,00 Y 27 $162,00 AD 34 $680,00 AK 35 $178,00 Y 25 $29,00 U 23 $178,00 X 38 $193,00 AC 30 $226,00 AK 39 $152,00 AJ 34 $217,00 AC 35 $183,00 AA 22 $211,00 Z 19 $172,00 AJ 32 $187,00 AF 26 $272,00 AI 27 $220,00 AJ 34 $320,00 AB 32 $183,00 AB 35 $272,00 AC 32 $207,00 AB 28 $178,00 AC 30 $168,00 AC 28 $178,00 AB 32 $310,00 AD 30 $188,00 AB 35 $188,00 The sample above is only an excerpt of the total dataset of 16K rows Each row represents a single delivery order, where the 2 first columns are the map coordinate and the third the purchase amount. Would it be possible to plot the above data in a chart or coordinate system. Where the each plot should be a summary of all sales in the same map coordinate. Also a similar chart of order count would be nice to have.

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• Does apple support core plot framework? Can we use googlecode repository source codes ?

  - by Bhawani

  Hi folks, I have a doubt if apple is supporting coreplot framework in it's application.Can anyone tell me?

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• Core Plot: how to draw custom logic according to user touches?

  - by sashaeve

  I want to draw some additional lines and labels according to user touches. In CPTestAppScatterPlotController.m - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event and other similar methods not handled. Where I should add custom drawing logic accorfing to user touches?

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• How can I use gnuplot to plot data that is in an un-friendly format?

  - by Zack

  I need to graph some data that is not exactly in the most friendly format, most examples or usage puts things in a nice column/table that is very easy to parse and graph. However I have the following format (and am a bit stuck as to how to tackle this): DATE1 label_1 xx yy DATE1 label_2 xx yy DATE1 label_3 xx yy DATE2 label_2 xx yy DATE2 label_3 xx yy DATE3 label_1 xx yy DATE3 label_2 xx yy DATE3 label_3 xx yy DATE4 label_2 xx yy DATE4 label_3 xx yy ...continues *I've added the extra space between the dates for readability. **Note: under DATE2,DATE4 label_1 is missing, i.e. the data file may have labels that come and go and should represent a discontinuity in the graph. I'd like to have the X-axis use the DATEX for the labels, and then create two lines for each label (xx and yy respectively). Does anyone have any suggestions on the best way to tackle this problem?

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• How can I plot a time series graph with Perl?

  - by Jazz

  I have some data from a database (SQLite), mapping a value (an integer) to a date. A date is a string with this format: YYYY-MM-DD hh:mm. The dates are not uniformly distributed. I want do draw a line graph with the dates on X and the values on Y. What is the easiest way to do this with Perl? I tried DBIx::Chart but I could not make it recognize my dates. I also tried GD::Graph, but as the documentation says: GD::Graph does not support numerical x axis the way it should. Data for X axes should be equally spaced

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• Can IDL create a contour plot colorbar like this?

  - by Carthage

  At the bottom of this image, you'll see a nice colorbar that matches the colors of the graph correctly: http://stribog.cc.umanitoba.ca/ceos/20100517_00z_prod/ I couldn't find anything that created a color bar with exactly the colors I wanted, it always seemed to involve a spectrum that included colors I didn't use. I have a vector of colors I use for my data. Is there I way I can use that vector to create a color bar with only those colors?

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• Graphing perpendicular offsets in a least squares regression plot in R

  - by D W

  I'm interested in making a plot with a least squares regression line and line segments connecting the datapoints to the regression line as illustrated here in the graphic called perpendicular offsets: http://mathworld.wolfram.com/LeastSquaresFitting.html I have the plot and regression line done here: ## Dataset from http://www.apsnet.org/education/advancedplantpath/topics/RModules/doc1/04_Linear_regression.html ## Disease severity as a function of temperature # Response variable, disease severity diseasesev<-c(1.9,3.1,3.3,4.8,5.3,6.1,6.4,7.6,9.8,12.4) # Predictor variable, (Centigrade) temperature<-c(2,1,5,5,20,20,23,10,30,25) ## Fit a linear model for the data and summarize the output from function lm() severity.lm <- lm(diseasesev~temperature,data=severity) # Take a look at the data plot( diseasesev~temperature, data=severity, xlab="Temperature", ylab="% Disease Severity", pch=16 ) abline(severity.lm,lty=1) title(main="Graph of % Disease Severity vs Temperature") Should I use some kind of for loop and segments http://www.iiap.res.in/astrostat/School07/R/html/graphics/html/segments.html to do the perpendicular offsets? Is there a more efficient way? Please provide an example if possible.

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