Useful Functions for MATLAB

Collection of useful functions for MATLAB.

Visualization

• circle: Returns the coordinates for plotting a circle.
• imresizew: Resizes an image to a specified width (in pixels).
• interprgb: Interpolate a new color between two colors (in RGB color space).
• interpshape: Increases the number of points defining a shape by placing n uniformly spaced points along each line segment connecting existing points.
• shade_tint_rgb: Shade and tint RGB colors.
• stanford_S: Returns coordinates for drawing the Stanford S with (approximately) the specified number of points

Rounding

• ceiln: Round up (toward positive infinity) to n digits.
• floorn: Round down (toward negative infinity) to n digits.

Integration of Data

• cumulative_integral: Cumulative integration of data (i.e. arrays) over the domain of the data.
• definite_integral: Definite integration of data (i.e. arrays) over the domain of the data.

Basic Data Manipulation

• delete_data_points: Deletes data points based on a specified condition.
• reduce_data_points: Reduces the number of data points in a data set to a specified number.
• scale_data: Linearly scales data to start and end between specified points.
• space_data_equally: Interpolates unequally spaced data to make it equally spaced in the independent variable.

Waitbars

• [wb,prop] = initialize_waitbar(msg): Initializes a waitbar.
• [wb,prop] = prop = update_waitbar(k,N,wb,prop): Updates a waitbar.

Folder Management

• create_folders(paths): Creates a set of folders.
• empty_folders(paths): Deletes all contents from a set of folders.
• files = list_folder_contents(path,extensions): Lists the contents of a folder. A list of file extensions can be specified to only list specific file types.

Miscellaneous

• load_numeric_data: Loads numeric data from a .mat file.
• order_of_magnitude: Determines the order(s) of magnitude of a (set of) number(s) for a specific base.
• rmse: Calculates the root-mean-square error between a set of values and a set of estimates of those values.
• same_denominator: Scales a set of fractions so they each have the same denominator.
• scientific_notation_string: Returns a string of a number written using scientific notation.