>> help polyfun
Polynomial and interpolation functions.
Polynomials.
roots - Find polynomial roots.
poly - Construct polynomial with specified roots.
polyval - Evaluate polynomial.
polyvalm - Evaluate polynomial with matrix argument.
residue - Partial-fraction expansion (residues).
polyfit - Fit polynomial to data.
polyder - Differentiate polynomial.
conv - Multiply polynomials.
deconv - Divide polynomials.
Data interpolation.
interp1 - 1-D interpolation (1-D table lookup).
interp2 - 2-D interpolation (2-D table lookup).
interpft - 1-D interpolation using FFT method.
griddata - Data gridding.
Spline interpolation.
spline - Cubic spline data interpolation.
ppval - Evaluate piecewise polynomial.
>> help ops
Operators and special characters.
Char Name HELP topic
+ Plus arith
- Minus arith
* Matrix multiplication arith
.* Array multiplication arith
^ Matrix power arith
.^ Array power arith
\ Backslash or left division slash
/ Slash or right division slash
./ Array division slash
kron Kronecker tensor product kron
: Colon colon
( ) Parentheses paren
[ ] Brackets paren
. Decimal point punct
.. Parent directory punct
... Continuation punct
, Comma punct
; Semicolon punct
% Comment punct
! Exclamation point punct
' Transpose and quote punct
= Assignment punct
== Equality relop
<,> Relational operators relop
& Logical AND relop
| Logical OR relop
~ Logical NOT relop
xor Logical EXCLUSIVE OR xor
Logical characteristics.
exist - Check if variables or functions are defined.
any - True if any element of vector is true.
all - True if all elements of vector are true.
find - Find indices of non-zero elements.
isnan - True for Not-A-Number.
isinf - True for infinite elements.
finite - True for finite elements.
isempty - True for empty matrix.
isreal - True for real matrix.
issparse - True for sparse matrix.
isstr - True for text string.
isglobal - True for global variables.
>> help lang
Language constructs and debugging.
MATLAB as a programming language.
script - About MATLAB scripts and M-files.
function - Add new function.
eval - Execute string with MATLAB expression.
feval - Execute function specified by string.
global - Define global variable.
nargchk - Validate number of input arguments.
lasterr - Last error message.
Control flow.
if - Conditionally execute statements.
else - Used with IF.
elseif - Used with IF.
end - Terminate the scope of FOR, WHILE and IF statements.
for - Repeat statements a specific number of times.
while - Repeat statements an indefinite number of times.
break - Terminate execution of loop.
return - Return to invoking function.
error - Display message and abort function.
Interactive input.
input - Prompt for user input.
keyboard - Invoke keyboard as if it were a Script-file.
menu - Generate menu of choices for user input.
pause - Wait for user response.
uimenu - Create user interface menu.
uicontrol - Create user interface control.
Debugging commands.
dbstop - Set breakpoint.
dbclear - Remove breakpoint.
dbcont - Resume execution.
dbdown - Change local workspace context.
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.
mexdebug - Debug MEX-files.
>> help plotxy
Two dimensional graphics.
Elementary X-Y graphs.
plot - Linear plot.
loglog - Log-log scale plot.
semilogx- Semi-log scale plot.
semilogy- Semi-log scale plot.
fill - Draw filled 2-D polygons.
Specialized X-Y graphs.
polar - Polar coordinate plot.
bar - Bar graph.
stem - Discrete sequence or "stem" plot.
stairs - Stairstep plot.
errorbar- Error bar plot.
hist - Histogram plot.
rose - Angle histogram plot.
compass - Compass plot.
feather - Feather plot.
fplot - Plot function.
comet - Comet-like trajectory.
Graph annotation.
title - Graph title.
xlabel - X-axis label.
ylabel - Y-axis label.
text - Text annotation.
gtext - Mouse placement of text.
grid - Grid lines.
See also PLOTXYZ, GRAPHICS.
>> help plotxyz
Three dimensional graphics.
Line and area fill commands.
plot3 - Plot lines and points in 3-D space.
fill3 - Draw filled 3-D polygons in 3-D space.
comet3 - 3-D comet-like trajectories.
Contour and other 2-D plots of 3-D data.
contour - Contour plot.
contour3 - 3-D contour plot.
clabel - Contour plot elevation labels.
contourc - Contour plot computation (used by contour).
pcolor - Pseudocolor (checkerboard) plot.
quiver - Quiver plot.
Surface and mesh plots.
mesh - 3-D mesh surface.
meshc - Combination mesh/contour plot.
meshz - 3-D Mesh with zero plane.
surf - 3-D shaded surface.
surfc - Combination surf/contour plot.
surfl - 3-D shaded surface with lighting.
waterfall- Waterfall plot.
Volume visualization.
slice - Volumetric visualization plots.
Graph appearance.
view - 3-D graph viewpoint specification.
viewmtx - View transformation matrices.
hidden - Mesh hidden line removal mode.
shading - Color shading mode.
axis - Axis scaling and appearance.
caxis - Pseudocolor axis scaling.
colormap - Color look-up table.
Graph annotation.
title - Graph title.
xlabel - X-axis label.
ylabel - Y-axis label.
zlabel - Z-axis label for 3-D plots.
text - Text annotation.
gtext - Mouse placement of text.
grid - Grid lines.
3-D objects.
cylinder - Generate cylinder.
sphere - Generate sphere.
See also COLOR, PLOTXY, GRAPHICS.
>> help strfun
Character string functions.
General.
strings - About character strings in MATLAB.
abs - Convert string to numeric values.
setstr - Convert numeric values to string.
isstr - True for string.
blanks - String of blanks.
deblank - Remove trailing blanks.
str2mat - Form text matrix from individual strings.
eval - Execute string with MATLAB expression.
String comparison.
strcmp - Compare strings.
findstr - Find one string within another.
upper - Convert string to uppercase.
lower - Convert string to lowercase.
isletter - True for letters of the alphabet.
isspace - True for white space characters.
strrep - Replace a string with another.
strtok - Find a token in a string.
String to number conversion.
num2str - Convert number to string.
int2str - Convert integer to string.
str2num - Convert string to number.
mat2str - Convert matrix to string.
sprintf - Convert number to string under format control.
sscanf - Convert string to number under format control.
Hexadecimal to number conversion.
hex2num - Convert hex string to IEEE floating point number.
hex2dec - Convert hex string to decimal integer.
dec2hex - Convert decimal integer to hex string.
