Specify or display systems of LMIs as MATLAB expressions

lmiedit

`lmiedit`

is a graphical
user interface for the symbolic specification of LMI problems. Typing `lmiedit`

calls
up a window with two editable text areas and various buttons. To specify
an LMI system,

Give it a name (top of the window).

Declare each matrix variable (name and structure) in the upper half of the window. The structure is characterized by its type (

`S`

for symmetric block diagonal,`R`

for unstructured, and`G`

for other structures) and by an additional structure matrix similar to the second input argument of`lmivar`

. Please use one line per matrix variable in the text editing areas.Specify the LMIs as MATLAB

^{®}expressions in the lower half of the window. An LMI can stretch over several lines. However, do not specify more than one LMI per line.

Once the LMI system is fully specified, you can perform the following operations by pressing the corresponding button:

Visualize the sequence of

`lmivar`

/`lmiterm`

commands needed to describe this LMI system (`view commands`

buttons)Conversely, display the symbolic expression of the LMI system produced by a particular sequence of

`lmivar`

/`lmiterm`

commands (click the`describe...`

buttons)Save the symbolic description of the LMI system as a MATLAB string (

`save`

button). This description can be reloaded later on by pressing the`load`

buttonRead a sequence of

`lmivar`

/`lmiterm`

commands from a file (`read`

button). The matrix expression of the LMI system specified by these commands is then displayed by clicking on`describe the LMIs...`

Write in a file the sequence of

`lmivar`

/`lmiterm`

commands needed to specify a particular LMI system (`write`

button)Generate the internal representation of the LMI system by pressing

`create`

. The result is written in a MATLAB variable with the same name as the LMI system

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