Notice that the old data was overwritten due to the hold off above. Note - the window is not deleted, just the contents inside the window. It optionally returns the status of the close operation. If h is a vector or matrix, close deletes all Figures identified by h. close all deletes all Figures. Each pane contains an Axes.
Subsequent plots are output to the current pane.
The new Axes becomes the current Axes. Description line creates a Line object in the current Axes. You can specify the color, width, line style, and marker type, as well as other characteristics. This example uses the line function to add a shadow to plotted data. Next, add a shadow by offsetting the x coordinates.