Search Support Clear Filters. Support Answers MathWorks. Search MathWorks. MathWorks Answers Support. Open Mobile Search. Trial software. You are now following this question You will see updates in your activity feed. You may receive emails, depending on your notification preferences. How do I smoothen an imagesc plot? Show older comments. Samyak Kumar on 22 Nov Vote 0. Commented: Samyak Kumar on 22 Nov Trial software. You are now following this question You will see updates in your activity feed.
You may receive emails, depending on your notification preferences. How to plot a picture in squared sized using imagesc? Show older comments. Weiqian Jiang on 25 Sep Vote 0. Commented: Weiqian Jiang on 26 Sep Accepted Answer: Image Analyst.
Each element of C defines a color for one pixel of the image. The elements of C map to colors in the colormap of the associated axes. The smallest value in C maps to the first color in the colormap and the largest value maps to the last color. The behavior of NaN elements is not defined. If you specify C as an m -by- n -by-3 array, then the imagesc function interprets the image as a truecolor RGB image.
Use the rescale function to scale truecolor pixel values before calling imagesc. To use the low-level version of the imagesc function instead, set the CData property as a name-value pair. For example, imagesc 'CData',C. Data Types: single double int8 int16 int32 int64 uint8 uint16 uint32 uint64 logical. Placement along the x -axis, specified in one of these forms:. If C is a 3-D array, then m and n are the first two dimensions.
Evenly distribute the centers of the remaining elements of C between those two points. Scalar — Center C 1,1 at this location and each following element one unit apart. To use the low-level version of the imagesc function instead, set the XData property as a name-value pair. You cannot interactively pan or zoom outside the x-axis limits or y-axis limits of an image, unless the limits are already set outside the bounds of the image.
If the limits are already outside the bounds, there is no such restriction. If other objects such as a line occupy the axes and extend beyond the bounds of the image, you can pan or zoom to the bounds of the other objects, but no further. To use the low-level version of the imagesc function instead, set the YData property as a name-value pair. Color limits, specified as a two-element vector of the form [cmin cmax] , where cmax is greater than cmin.
Values in C that are less than or equal to cmin map to the first color in the colormap. Values greater than or equal to cmax map to the last color in the colormap. Values between cmin and cmax linearly map to the colormap. If you specify the color limits, then the imagesc function sets the CLim property of the axes to the values specified.
If you do not specify the color limits, then imagesc sets the CLim property of the axes to the minimum and maximum values in C.
Axes object. If you do not specify an Axes object, then imagesc uses the current axes. Specify optional comma-separated pairs of Name,Value arguments. Name is the argument name and Value is the corresponding value. Name must appear inside quotes. You can specify several name and value pair arguments in any order as Name1,Value1, The properties listed here are a subset of image properties.
For a complete list, see Image Properties. How do you make the x-axis in imagesc using datetime values? Show older comments. Hannah on 27 Sep Vote 0. Commented: Andrew McLean on 23 Mar I have data that I wish to display using imagesc with the y-axis being a unit of distance and the x-axis being a datetime array, however, I receive an error when I do this.
Any help would be appreciated. For example:. Throws the following error:. Error using image. Image XData and YData must be vectors. Error in imagesc line Answers 3. KSSV on 27 Sep Vote 1. Cancel Copy to Clipboard. I'm aware that you can manually change the tick marks on axis labels, but the benefit of the datetime function is that it changes as you zoom, hence my desire to use it. If I wasn't fussed about zooming, I'd use datetick.
Walter Roberson on 27 Sep
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