See the property descriptions for more details. Use the AlphaDataMapping property to control how the objects interpret the alpha data values. Then, specify flat transparencyīy setting either the MarkerFaceAlpha or MarkerEdgeAlpha property to First, specify the transparency values by setting the AlphaData property to an array the same size as the Scatter plots - Specify a different transparency value for each Then, specify flat or interpolated transparency by setting the FaceAlpha and EdgeAlpha properties to either 'flat' or 'interp'. First, specify the transparency values by setting the FaceVertexAlphaData property to a column vector with length equal to either the number of faces (for flat transparency) or the number of vertices in the patch (for interpolated transparency). Additionally, you can specify whether to use flat or interpolated transparency across each face or edge. Patches - Specify a different transparency value for each face and edge. First, specify the transparency values by setting the AlphaData property to an array the same size as the ZData property. Specify the values by setting the AlphaData property to an array the same size as the CData property.Ĭhart and primitive surfaces - Specify a different transparency value for each face and edge. alpha(0.Images - Specify a different transparency value for each image element. You can adjust the transparency with the alpha function. We can select a pre-set lighting algorithm which is good for curved surfaces. I know I can use 'rectangle' command to draw any shape of rectangle I want. Line(s(1), s(2), s(3), 'marker', '.', 'markersize', 20, 'color', 'red') 1 I would like to draw a lot of rectangles in Matlab. % Put a point to indicate where the light source is (for reference) Alternatively, you can also use camlight. You can place a light source at a particular location. You can control the shading of surface objects using the shading function. You can change colormaps either interactively: The default colormap for a figure is JET. It is represented by an M-by-3 matrix, where each row represents a color (in RGB). To see what the current colormap is for the current figure, use the command colormap: colormap It exists in all MATLAB graphics, but you see the effect of it mostly in 3D surfaces and images. Instead, transform the transparency values to span the alphamap using the alpha scaled command. Values less than 0 are completely transparency and values greater than 1 are completely opaque. By default, the image clamps the transparency values between 0 and 1. ColormapsĬolormaps are MATLAB's way of mapping levels/intensities/values to colors. Vary the transparency across the image based on the color values. In fact, there are a number of cam* commands for manipulating the view camera. camorbit(180, 0) % 180 degrees about Z-axis view(50, 40) % azimuth and elevationĪnother way of changing the view is to use commands like camorbit. You can do it interactively from the figure window:īut you can also do it programmatically using the view command. In a 3D plot, you can change the orientation of the view. Let's first focus on the three different types of 3D plots:įor the rest of the tutorial, we'll take a look at each of these topics in detail. MATLAB's 3D plotting capability is just as versatile as the 2D plots. Legend( 'Signal', 'Location', 'Northwest') 'MarkerSize', 10) Īdding titles, labels, legends is as simple as using the commands title, xlabel, ylabel, legend. In the next section, we'll talk more about these properties. In fact, you have much more control by providing specific "properties" to the command. Just highlight a variable that you want to plot and click on the drop down menu to bring up the Plot Selector.Īs with many other MATLAB functions, plot takes additional arguments allowing you to customize the plot. You can also access these functions directly from the Workspace Browser. Use PLOT for single color, single marker size scatter plots. H = SCATTER(.) returns handles to the scatter objects created. SCATTER(AX.) plots into AX instead of GCA. SCATTER(.,M) uses the marker M instead of 'o'. SCATTER(X,Y,S) draws the markers at the specified sizes (S) SCATTER(X,Y) draws the markers in the default size and color. Length(X)-by-3 matrix, it directly specifies the colors of the Same length as X and Y, the values in C are linearly mapped If S is empty, theĬ determines the colors of the markers. MATLAB draws all the markers the same size. Vector the same length a X and Y or a scalar. S determines the area of each marker (in points^2). SCATTER(X,Y,S,C) displays colored circles at the locations specifiedīy the vectors X and Y (which must be the same size). To learn how to use these functions, use help or doc help scatter % doc scatter SCATTER Scatter/bubble plot. Here's a good summary of these plotting routines. MATLAB provides a variety of plotting routines, both in 2D and 3D.
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