ContourPlot does that very efficiently (that is: it uses clever multi-grid methods, not just a brute force fine-grained scan) but just gives me a plot.
Contourplot mathematica how to#
Math 21a you are not responsible for knowing how to code in Mathematica for. I have a function f (x,y) of two variables, of which I need to know the location of the curves at which it crosses zero. Explain in a few sentences how you know which graph and contour plot match. However, I am actually only interested in those contours that cross a given point $(u_0,v_0)$ of my function. easily placing arrows along curves (in 2D or 3D space) produced by Plot, ParametricPlot, ParametricPlot3D, and ContourPlot and along the solutions to. Extract contours from ContourPlot in Mathematica. Also it will take a while to plot it at MaxRecursion->7 so stand by. So your image may not be as clean as mine. Then it uses an adaptive algorithm to subdivide at most MaxRecursion times, attempting to find the boundaries of all regions in which pred is True. Contour and surface plots in Mathematica Mathematica can make very nice contour and surface plots of three-dimensional functions such as z z(x, y). When using the ContourPlot function in Mathematica there are issues and you may get some noise.
I have a very complicated function $f(u,v)$ in the complex $u,v$ plane which has several contours with the same value $x$, so that when I draw a ContourPlot of the equation $f(u,v)=x$ I get several lines (far too many, it crowds the graphic). RegionPlot initially evaluates pred at a grid of equally spaced sample points specified by PlotPoints. Verify by plotting the points points // ListPlot The lines drawn on the contour plot are described by lines Cases plot, Line, Infinity The list argument to Line contains the index of the point in points.
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