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No, only from CellML 1.0/1.1 to CellML 2.0.

We use XSLT for that conversion and I am not sure we could do something
similar for CellML 2.0 to CellML 1.0/1.1. Indeed, in CellML 2.0, connections
don't hold any directionality information. So, to convert CellML 2.0 to
CellML 1.0/1.1 would require analysing the model to determine that
directionality information. So, yes, it wouldn't be as straightforward as
converting from CellML 1.0/1.1 to CellML 2.0.

Alan
________________________________
From:
cellml-discussion-request AT lists.cellml.org

<cellml-discussion-request AT lists.cellml.org>
on behalf of Lucian Smith
<lucianoelsmitho AT gmail.com>
Sent: Wednesday, 6 July 2022 9:15 am
To: CellML Discussion List
<cellml-discussion AT cellml.org>
Subject: Re: [cellml-discussion] CellML model not rendered in OpenCOR

Is there a converter from CellML 2.0 to 1.1?

On Tue, Jul 5, 2022 at 1:55 PM Alan Garny
<a.garny AT auckland.ac.nz<mailto:a.garny AT auckland.ac.nz>>
wrote:
Hi Matthias,

Sorry, but libCellML generates CellML 2.0 models while OpenCOR "only"
supports CellML 1.0/1.1 at this stage. So, yes, using OpenCOR, you won't be
able to edit/run any model generated by libCellML.

Support for CellML 2.0 in OpenCOR is planned, but it is still some time away.
This will be done through libOpenCOR, OpenCOR's new backend which will be
using libCellML rather than the original CellML API. (The reason for going
the libOpenCOR route is that libOpenCOR will greatly improve our Python
bindings.)

Hopefully, I will have more information to share at COMBINE in October.

Alan
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From:
cellml-discussion-request AT lists.cellml.org<mailto:cellml-discussion-request AT lists.cellml.org>

<cellml-discussion-request AT lists.cellml.org<mailto:cellml-discussion-request AT lists.cellml.org>>
on behalf of Matthias König
<konigmatt AT googlemail.com<mailto:konigmatt AT googlemail.com>>
Sent: Wednesday, 6 July 2022 3:17 am
To:
cellml-discussion AT lists.cellml.org<mailto:cellml-discussion AT lists.cellml.org>

<cellml-discussion AT lists.cellml.org<mailto:cellml-discussion AT lists.cellml.org>>
Subject: [cellml-discussion] CellML model not rendered in OpenCOR

Hi all,
I am trying to create the repressilator in CellML as part of a project via
the python binding.
Unfortunately, the created models (cellml v2.0) are not rendered in OpenCOR.
I.e. normally I see nice CellML Text in the editor, but for the attached
model nothing is displayed.

```

<?xml version="1.0" encoding="UTF-8"?>
<model
xmlns="http://www.cellml.org/cellml/2.0#<http://www.cellml.org/cellml/2.0#>"
name="repressilator">
<component name="parameters">
<variable name="n" units="dimensionless" initial_value="2"/>
</component>
</model>

```
Model was created using libcellml via

```

import libcellml
from cellml_utilities import print_model


def create_model(cellml_path: Path) -> libcellml.Model:
"""Create CellML repressilator and save to Path."""
model = libcellml.Model()
model.setName("repressilator")

comp_parameters = libcellml.Component()
comp_parameters.setName("parameters")
model.addComponent(comp_parameters)

# var n: dimensionless {init: 2, pub: out};
var_n = libcellml.Variable()
var_n.setName("n")
var_n.setInitialValue(2.0)
var_n.setUnits("dimensionless")
# var_n.setInterfaceType()
comp_parameters.addVariable(var_n)

# Checking that it worked
print_model(model)

# Save model
printer = libcellml.Printer()
serialised_model: str = printer.printModel(model)

with open(cellml_path, "w") as f_cellml:
f_cellml.write(serialised_model)

return model

```

How can I create models with python libcellml which I can use/edit/view in
OpenCOR?
Best Matthias

--
Matthias König, PhD.
Junior Group Leader Systems Medicine of the Liver Lab
Humboldt-Universität zu Berlin,
Institute of Biology, Institute for Theoretical Biology
Philippstraße 13, Haus 20, 10115 Berlin
Tel: +49 30 2093 98435
https://livermetabolism.com<https://livermetabolism.com>
konigmatt AT googlemail.com<mailto:konigmatt AT googlemail.com>
https://twitter.com/konigmatt<https://twitter.com/konigmatt>
https://github.com/matthiaskoenig<https://github.com/matthiaskoenig>

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• [cellml-discussion] CellML model not rendered in OpenCOR, Matthias König, 07/06/2022
  • Re: [cellml-discussion] CellML model not rendered in OpenCOR, Alan Garny, 07/06/2022
    • Re: [cellml-discussion] CellML model not rendered in OpenCOR, Lucian Smith, 07/06/2022
      • Re: [cellml-discussion] CellML model not rendered in OpenCOR, Alan Garny, 07/06/2022
        • Re: [cellml-discussion] CellML model not rendered in OpenCOR, Matthias König, 07/06/2022
          • Re: [cellml-discussion] CellML model not rendered in OpenCOR, Michael Clerx, 07/06/2022
            • Re: [cellml-discussion] CellML model not rendered in OpenCOR, Matthias König, 07/07/2022
              • Re: [cellml-discussion] CellML model not rendered in OpenCOR, Alan Garny, 07/07/2022

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