Example for sqrt had imaginary inputs but imaginary is not implemented due to no research/trial error on that issue.

When a xcos diagram is imported. If user modify the parameter of a block then

A connecting wires are getting lost between that block and others block.

A duplicate block is getting created on above of same block. (If that block is dragged you can see below duplicate block)

The set() blocks are having incorrect calls to the get() method.

For example, BARXY.prototype.set() calls BARXY.get() on error.

There is no BARXY.get() method, even though there is a BARXY.prototype.get() method.

So, the code throws an exception and there is no further action in the code.

1. If intention was to throw an exception, then this call must be replaced with something like:

throw "incorrect";

2. Proper coding would involve no throwing of exception. Return a value (like false) and ensure that the properties window is not closed.

output graph of xcos diagram does not appear if simulation time is less than 10 seconds.

The following links are missing between the popup and the toolbar buttons:

1. If the user changes the script manually, the changed script should be saved.

2. On clicking execute, the changed script should be executed.

3. The execute (script) button must be disabled if:
   a) The text area is empty, or
   b) The script is already running
   Similarly, the stop (script) button must be disabled if:
   a) The script is not running

4. The output must be saved (even if empty)

5. The output window must be enabled on success, only if output is not empty.

the workspace of the prerequisite file is to be saved for use by the diagram.

Issue with use of math.transpose() function in JS file of PNP block, thus we are not able to drag that block on canvas and use it.

All input must be checked for sanity. Currently, there is only sanity check on some of the .sci files.

Add SCILAB_INSTANCE_TIMEOUT_INTERVAL to config.py. Add start time when command is run. Add a timeout = start time + SCILAB_INSTANCE_TIMEOUT_INTERVAL to the scilab-adv-cli instance. At the end of the timeout, kill the scilab-adv-cli instance and return error.

When a user clicks on simulate in the browser, a scilab-adv-cli instance starts. If the user does not click on Stop, this instance can continue forever. This happens with diagrams having specific type of blocks. Ensure that simulation stops cleanly after reaching the timeout.

At present, the value of SCILAB_INSTANCE_TIMEOUT_INTERVAL will be 3 minutes.

Later, we can add support for timeout based on specific blocks in the diagram.

Setting correct size of block while creating a new diagram on xcos-on-cloud

Make the stop script button work.

It should abort the running script and discard the workspace.

Previous workspace, if any, should be retained.

Output graph is not displaying correctly as expected.

When a diagram containing a CurrentSensor block is imported, the output ports of the CurrentSensor block are switched.

On simulation, this leads to a Modelica error.

Xcos on cloud must not crash. All issues related to this main topic will come under this.

make the execute script button work

There must be support for running TBC examples on cloud. On selecting an example, the cloud must load the corresponding .xcos file and the associated .sci file.

This can be implemented by getting the required information from the eid / fileid of the TBC.

Show the prerequisite file to user for editing and execution

The angle between the xyz axis in 3D block output graph is not same as that in scilab desktop output.

The /stop url gets called when:

• user closes the simulation window
• user clicks on Stop (if user clicks multiple times, /stop gets called each time)
• user closes the browser window
  Ensure that /stop gets called maximum one time.

EXPRESSION block is an important block. Support for this block is required.

thermo hydraulics block work

Currently, the scilab log file is based on the pid of scilab.

Finding the pid of scilab is error-prone, especially when lot of scilab instances are running.

Find a way for scilab to write to a log file decided by xcos.

Some xcos files have a prerequisite file. Get it from the server along with the xcos file.

If popups are not enabled in browser, the simulation fails. The simulation window also cannot be closed.

If popups are not enabled, show a message and close the simulation window.

CEVENTSCOPE output is sometimes not getting displayed.

Scilab workspace associated with a diagram must be loaded into the workspace.

This can be implemented by running a .sci file before simulating the diagram.

Provision must be done for loading a .sci file along with the diagram.

Provision must be made to display the output of the simulation of the xcos diagram.

This can be achieved by displaying the input and output windows after running the xcos diagram.

Sometimes, /UpdateTKfile gets called even if there is no tkscale in that diagram. Ensure that it gets called only if required.

When importing a diagram, the following display attributes must be restored

• height
• width
• direction
• flip (true / false)
• mirror (true / false)
• border colour
• fill colour

this will not impact creating a new xcos diagram.

There is a small size difference between the size in the left panel and the final size when dropped on the canvas.

When dragging, use the final image size so that it matches the size when dropped.

Some urls require a diagram id. As no diagram id is available, a default diagram id of 0 is passed with the url.

At the start of the session (before running any simulation), even the diagram id of 0 does not exist. This throws an error for those urls.

The urls with this issue are:

1. /getOutput
2. /getExpressionOutput (#151)

The workspace is saved when the script runs.

When clicking on simulate, use the workspace.

Some buttons are required for the prerequisite file on the main window:

(Re) Edit
(Re) Execute
Stop

Some are required on the popup window:

Maximize
Minimize
(Re) Execute
Stop

On clicking on simulate with an empty diagram, we get two messages:

• Empty canvas
• Empty diagram

Ensure that only one message appears.

A new simulation window appears which overlaps the previous simulation window. The previous simulation window does not get closed.

In some simulations, the graph scales shown by scilab and by the simulation window are different.

The titles are also different.

Ensure that graph scales and titles match.

UI Issue : Properties window's title shows same title for all categories block, which need to be fixed and should be look same as Desktop Xcos's blocks properties window.

When simulation is started, a disconnected tkscale window is shown by scilab.

Suppress the creation of this window.

Issue encounter when importing Xcos example having const_m block with vector as input.

When simulation is started, a scilab output window is shown to display the graph.

Suppress this window.

When clicking on simulate, a simulation popup appears. Simultaneously, a scrollbar appears on the canvas. Scrolling shows a portion of the window below the statusbar.

The scrollbar disappears when the simulation window is closed.

This scrollbar must not appear during simulation.