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Matlab append5/26/2023 ![]() ![]() In that case, the file descriptor will have the value -1 assigned to it, which could be checked to determine whether the file got opened or not (using an if statement). It is possible that the file may not open even if it is present, due to file locks, unauthorized access, low memory space, etc.Resulting in an error message being displayed. If the file doesn’t exist isfile equates to 0, and else the block is executed. Then the file descriptor, format string denoting the array (padding included) and the array to be appended is passed as an argument to the function. If the file exists, then the file is opened via fopen function in append mode (using a+ flag) and its descriptor is saved into variable fid. After which the presence of the file is tested using the isfile function. Then a 1D array was defined that is to be appended inside the file. In the above code firstly the name of the file is saved into the variable filename. How to Solve Histogram Equalization Numerical Problem in MATLAB?.How to Remove Noise from Digital Image in Frequency Domain Using MATLAB?.Difference between inv() and pinv() functions in MATLAB.Reduced Row Echelon Form (rref) Matrix in MATLAB.Difference between Convolution VS Correlation.How to add White Gaussian Noise to Signal using MATLAB ?.Trapezoidal numerical integration in MATLAB.Turn a Matrix into a Row Vector in MATLAB.How to Remove Nan Values from a Matrix in MATLAB?.Image Sharpening Using Laplacian Filter and High Boost Filtering in MATLAB.Discrete Fourier Transform and its Inverse using MATLAB.Edge detection using Prewitt, Scharr and Sobel Operator.How to Find Index of Element in Array in MATLAB?.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.Check this link for more information about the text() function. You can also put multiple strings in the same box by making a cell array of the strings. Now let’s add a blue line before the text and a black box around the text and the line. For example, let’s plot a cosine wave and put some text on it with font size 18 and red color. You can also change the properties of the text like the font size using the FontSize property and the color using the Color property etc. If you give the coordinates which don’t lie on the plot, you won’t be able to see the text. Simply plot the variable and then select the coordinates from the plot and then use the text() function to place the text on the selected coordinates. You need to pass the x and y coordinate on which you want to place the text. We can also use the text() function to add text to the plot. Add Custom Legends Using the text() Function in MATLAB Check this link for more information about the legend() function. You can add as many legends as you want on a figure you just have to add more plots with undefined values on the same figure. In the above code, we added three legends on a cosine wave plot, and you can see they are not related to the plot. For example, let’s add custom legends to a cosine wave plot. You will not see the plots because their values are undefined, but you will see the legends. So to add custom legends that do not have any relation with the graph, you have to add more plots on the figure with undefined values, and then you can add more legends. ![]() If you try to add more than one legend using this function, MATLAB will give an error. But the problem is it only adds one legend on one plot. The legend() function is used to add legends to a plot in MATLAB. Add Custom Legends Using the legend() Function in MATLAB In this tutorial, we will discuss how to add custom legends to the plot using the legend() and text() function in MATLAB. Add Custom Legends Using the text() Function in MATLAB.Add Custom Legends Using the legend() Function in MATLAB. ![]()
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