Contour plot matlab

Help Center Help Center. A surface plot is a three-dimensional surface that has solid edge colors and solid face colors. The function plots the values in matrix Z as heights above a grid in the x - y plane defined by X and Y. The color of the surface varies contour plot matlab to the heights specified by Z.

Centro de ayuda Centro de ayuda. Para dibujar los contornos en una altura k , especifique levels como vector fila de dos elementos [k k]. Para obtener una lista de las propiedades, consulte Contour Properties. Especifique los ejes como el primer argumento en cualquiera de las sintaxis anteriores. Inserte valores NaN siempre que haya discontinuidades en una superficie. Reemplace todos los valores de la columna 26 por valores NaN.

Contour plot matlab

Create matrices X and Y , that define a grid in the x-y plane. Define matrix Z as the heights above that grid. Then plot the contours of Z. Define Z as a function of X and Y. In this case, call the peaks function to create X , Y , and Z. Then plot 20 contours of Z. Define Z as a function of two variables, X and Y. Then create a contour plot of that function, and display the labels by setting the ShowText property to 'on'. Create a contour plot of the peaks function. Make the contour lines thicker by setting the LineWidth property to 3. Insert NaN values wherever there are discontinuities on a surface. The contour function does not draw contour lines in those regions. Define matrix Z as a sampling of the peaks function. Replace all values in column 26 with NaN values.

LineSpec — Line style and color character vector string scalar.

Help Center Help Center. A contour plot represents a 3-D surface by plotting lines that connect points with common z -values along a slice. For example, you can use a contour plot to visualize the height of a surface in two or three dimensions. You can create a contour plot with emphasis on selected contour lines by splitting the data and creating two overlapping contour plots. Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select:. Select the China site in Chinese or English for best site performance.

Help Center Help Center. The contour lines must be long enough to fit the label, otherwise clabel does not insert a label. If you do not have the contour matrix C , then replace C with []. Click the mouse or press the space bar to label the contour closest to the center of the crosshair. Press the Return key while the cursor is within the figure window to terminate labeling. Use any of the input argument combinations in the previous syntaxes that do not include the contour object h.

Contour plot matlab

Help Center Help Center. Then, create a contour plot and add a legend. Specify contour levels from to 40 in increments of 5. Regular or geolocated data grid, specified as an M -by- N matrix. The contourm function does not display contour lines for elements of Z that have values of NaN. The RasterSize property of R must be consistent with size Z. Latitude coordinates, specified as an M -by- N matrix or an M -element vector. This argument does not support NaN values.

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Next, create a contour plot and specify the LabelFormat property as a handle to mylabelfun. For example, you can use a contour plot to visualize the height of a surface in two or three dimensions. Specify the axes as the first input argument. Based on your location, we recommend that you select:. Before Ra, use commas to separate each name and value, and enclose Name in quotes. MeshDensity — Number of evaluation points per direction 71 default number. The color is determined by the contour value of the line, the colormap, and the scaling of data values into the colormap. Before Ra, use commas to separate each name and value, and enclose Name in quotes. Create matrices X and Y , that define a grid in the x - y plane. In this case, call the peaks function to create X , Y , and Z. Create a blue surface plot with a contour plot underneath it by specifying the FaceColor name-value pair with 'b' as the value. Contour line labels, specified as 'on' or 'off' , or as numeric or logical 1 true or 0 false. Contours Over Discontinuous Surface. The dimension that varies must be the opposite of the dimension that varies in X. Specify the plotting interval as the second argument of fcontour.

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Based on your location, we recommend that you select:. Contour levels, specified as a scalar whole number or a vector. YLim 2 ; ax. Topics Label Contour Plot Levels This example shows how to label each contour line with its associated value. Zi — The height of the i th contour line Ni — The number of vertices in the i th contour line x ij , y ij — The coordinates of the vertices for the i th contour line, where j ranges from 1 to Ni. Use c to set properties after displaying the contour plot. You must set the ShowText property to 'on' for the LabelSpacing property to have an effect. Define matrix Z as a sampling of the peaks function. The column and row indices of Z are the x and y coordinates in the plane, respectively. Contours at Specific Levels with Labels. Buscar en Centro de ayuda Centro de ayuda MathWorks. The column and row indices of Z are the x and y coordinates in the plane, respectively. Contour levels, specified as a scalar whole number or a vector.