help debug

help debug
Debugging commands.

dbstop - Set breakpoint.
dbclear - Remove breakpoint.
dbcont - Resume execution.
dbdown - Change local workspace context.
dbmex - Enable MEX-file debugging.
dbstack - List who called whom.
dbstatus - List all breakpoints.
dbstep - Execute one or more lines.
dbtype - List M-file with line numbers.
dbup - Change local workspace context.
dbquit - Quit debug mode.

When a breakpoint is hit, MATLAB goes into debug mode, the debugger
window becomes active, and the prompt changes to a K>>. Any MATLAB
command is allowed at the prompt.

To resume M-file function execution, use DBCONT or DBSTEP.
To exit from the debugger use DBQUIT.

Reference page in Help browser
doc debug

help imread

[X,MAP] = IMREAD(FILENAME,FMT) reads the indexed image in FILENAME into
X and its associated colormap into MAP. Colormap values in the image
file are automatically rescaled into the range [0,1].

help SUBPLOT

SUBPLOT Create axes in tiled positions.
H = SUBPLOT(m,n,p), or SUBPLOT(mnp), breaks the Figure window
into an m-by-n matrix of small axes, selects the p-th axes for
the current plot, and returns the axis handle. The axes are
counted along the top row of the Figure window, then the second
row, etc. For example,

SUBPLOT(2,1,1), PLOT(income)
SUBPLOT(2,1,2), PLOT(outgo)

plots income on the top half of the window and outgo on the
bottom half. If the CurrentAxes is nested in a uipanel the
panel is used as the parent for the subplot instead of the
current figure.

SUBPLOT(m,n,p), if the axis already exists, makes it current.
SUBPLOT(m,n,p,'replace'), if the axis already exists, deletes it and
creates a new axis.
SUBPLOT(m,n,p,'align') places the axes so that the plot boxes
are aligned, but does not prevent the labels and ticks from
overlapping.
SUBPLOT(m,n,P), where P is a vector, specifies an axes position
that covers all the subplot positions listed in P.
SUBPLOT(H), where H is an axis handle, is another way of making
an axis current for subsequent plotting commands.

SUBPLOT('position',[left bottom width height]) creates an
axis at the specified position in normalized coordinates (in
in the range from 0.0 to 1.0).

SUBPLOT(..., PROP1, VALUE1, PROP2, VALUE2, ...) sets the
specified property-value pairs on the subplot axis. To add the
subplot to a specific figure pass the figure handle as the
value for the 'Parent' property.

If a SUBPLOT specification causes a new axis to overlap an
existing axis, the existing axis is deleted - unless the position
of the new and existing axis are identical. For example,
the statement SUBPLOT(1,2,1) deletes all existing axes overlapping
the left side of the Figure window and creates a new axis on that
side - unless there is an axes there with a position that exactly
matches the position of the new axes (and 'replace' was not specified),
in which case all other overlapping axes will be deleted and the
matching axes will become the current axes.

SUBPLOT(111) is an exception to the rules above, and is not
identical in behavior to SUBPLOT(1,1,1). For reasons of backwards
compatibility, it is a special case of subplot which does not
immediately create an axes, but instead sets up the figure so that
the next graphics command executes CLF RESET in the figure
(deleting all children of the figure), and creates a new axes in
the default position. This syntax does not return a handle, so it
is an error to specify a return argument. The delayed CLF RESET
is accomplished by setting the figure's NextPlot to 'replace'.

Be aware when creating subplots from scripts that the Position
property of subplots is not finalized until either a drawnow
command is issued, or MATLAB returns to await a user command.
That is, the value obtained for subplot i by the command
get(h(i),'Position') will not be correct until the script
refreshes the plot or exits.

See also gca, gcf, axes, figure, uipanel

Reference page in Help browser
doc subplot

help figure

FIGURE Create figure window.
FIGURE, by itself, creates a new figure window, and returns
its handle.

FIGURE(H) makes H the current figure, forces it to become visible,
and raises it above all other figures on the screen. If Figure H
does not exist, and H is an integer, a new figure is created with
handle H.

GCF returns the handle to the current figure.

Execute GET(H) to see a list of figure properties and
their current values. Execute SET(H) to see a list of figure
properties and their possible values.

See also subplot, axes, gcf, clf.

Reference page in Help browser
doc figure