The functions are given by: # Functions (1/0 means not defined) a = 0.9 f( x) = abs( x) < 2 * pi ? a * sin( x) : 1 / 0 g( x) = abs( x) < 2 * pi ? a * sin( x pi / 2) : 1 / 0 h( x) = abs( x) < 2 * pi ? a * sin( x pi) : 1 / 0 k( x) = abs( x) < 2 * pi ? a * sin( x 3.0 / 2 * pi) : 1 / 0įor an explanation of the used syntax to declare the functions have a look at the Defining piecewise functions article. GNUPLOT GRID CODE1 A multiplot with reduced axes labeling and nicely arranged graphs ( code to produce this figure) Tags: data, filledcurves, for, index, labels, multiplot, stats, stringįig. 2 – you should adjust the xrange and yrange values accordingly. If you want to plot a subset of states – as in Fig. The plotting of the state names is easily achieved by the labels plotting style:Īt the end we provide the list with the index numbers and the corresponding states. ( code to produce this figure, USA data, election data) 2 Names and election results of single U.S. This allows us to put them in the map as well, as you can see in Fig. The data file with the election results includes also the names of the single states and a coordinates to place them. Plot for 'usa.txt' i idx u 2:1 w filledcurves ls ELEC,\Īlaska and Hawaii are then added with additional plot commands and the help of multiplot. ELEC will return the election result for the state with the index 0. In a second step we plot the state borders and color the states with the help of the ELECstring. Stats 'election.txt' u 1:(ELEC = ELEC.sprintf('%i',$2)) During the parsing of every line the election result stored in the second column will be added at the end of the ELEC variable. The stats command is suitable for this, because it parses all the data but doesn’t try to plot any of them. 2.įor drawing a single state in red or blue we first collect the results for every single state in the string variable ELEC. With the help of these two data sets we are able to create Fig. The election result can be 1 or 2 – corresponding to blue and red. In addition to the state border data we have another file that includes results from an example election and strings with the names of the states. At the end of this post the corresponding index numbers for every state are listed. This allows us to plot a single state with the help of the index command. Two double lines divide the single states. GenerateOutput ( plotFile ) // Close the plot file. AddDataset ( dataset ) // Open the plot file. for ( x = - 5.0 x <= 5.0 x = 1.0 ) // Add the dataset to the plot. SetStyle ( Gnuplot2dDataset :: LINES_POINTS ) double x double y // Create the 2-D dataset. AppendExtra ( "set xrange " ) // Instantiate the dataset, set its title, and make the points be // plotted along with connecting lines. SetLegend ( "X Values", "Y Values" ) // Set the range for the x axis. SetTerminal ( "png" ) // Set the labels for each axis. SetTitle ( plotTitle ) // Make the graphics file, which the plot file will create when it // is used with Gnuplot, be a PNG file. Std :: string fileNameWithNoExtension = "plot-2d" std :: string graphicsFileName = fileNameWithNoExtension ".png" std :: string plotFileName = fileNameWithNoExtension ".plt" std :: string plotTitle = "2-D Plot" std :: string dataTitle = "2-D Data" // Instantiate the plot and set its title.
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