How do I build an array using MPh

[aboschTDA]

To javascript for a given array seems to follow the format:
model.component("comp1").geom("geom1").create("arr1", "Array");
model.component("comp1").geom("geom1").feature("arr1").active(False);
model.component("comp1").geom("geom1").feature("arr1").set("fullsize", ["1", "S_int"]);
model.component("comp1").geom("geom1").feature("arr1").set("displ", ["0", "-S_s"]);
model.component("comp1").geom("geom1").feature("arr1").selection("input").set("r2");

I cant seem to figure out the MPh equivalent for:
model.component("comp1").geom("geom1").feature("arr2").selection("input").set("r2");

I had assumed the MPh equivalent code would be:
array_1 = geometry.create('Array', name = 'array_1')
array_1.set('input', 'thing to array')
array_1.property('fullsize', ['1', 'S_int'])
array_1.property('displ', ['0', 'S_s'])

or array_1.property('input', 'thing to array')

Neither seem to work. Maybe I am missing something obvious?

[john-hen]

I think your question is about "selecting a geometry object as an input feature", rather than building the array. The array (of geometry objects) should build just fine.

I don't know what you mean by "to javascript". As far as I can tell, the code snippet you posted is Python. In other words, not Java code. And certainly not "Javascript", which is something else entirely.

Usually, I have model refer to an mph.Model object in Python code. And then access the "Java-like" API via model.java.

model.java.component("comp1").geom("geom1").create("arr1", "Array");
model.java.component("comp1").geom("geom1").feature("arr1").active(False);
model.java.component("comp1").geom("geom1").feature("arr1").set("fullsize", ["1", "S_int"]);
model.java.component("comp1").geom("geom1").feature("arr1").set("displ", ["0", "-S_s"]);
model.java.component("comp1").geom("geom1").feature("arr1").selection("input").set("r2");

It looks like you assigned model to the .java property of the Model object in your code snippet. But then it should work. Does it not? Please explain what works and what doesn't. I can't run your code to find out: it's incomplete. As far as I can tell, what you have there does work "using MPh", i.e. in Python.

Maybe you're looking for a way to make the Python code more "pythonic" (i.e., less "Java-like"). Then you'd want to call select() on the node that needs the input. Unfortunately, that won't work for geometry features, as the documentation states:

Raises NotImplementedError if the node (that this method is called on) is a geometry node. These may be supported in a future release. Meanwhile, access their Java methods directly.

So if that's what you want, it's simply not implemented. But, as the documentation also notes, you can just do... what you're already doing, right?

[aboschTDA]

Hi John,

Thank you for responding. My apologies for the confusion... my issue turned out to be a dumb oversight on my part. I had built my initial geometry using the python like syntax and I was referencing the python variable name in the java like array code instead of its tag. The code snippet I had provided was from a COMSOL javafile export and still had a javalike tag which is why it looked like it would run.

My working code is thus:

import mph
client = mph.start()
model = client.create('Test')

parameters = model/'parameters'
(parameters/'Parameters 1').rename('parameters')

model.parameter('CH', '1[in]')
model.description('CH', 'Cavity Height')
model.parameter('CW', '1[in]')
model.description('CW', 'Cavity Width')
model.parameter('S_s', '1[mm]')
model.description('S_s', 'Spacing')
model.parameter('S_c', '5')
model.description('S_c', 'Sorbent Stack Count')

components = model/'components'
components.create(True, name = 'component')

geometries = model/'geometries'
geometry = geometries.create(2, name = 'geometry')

cavity = geometry.create('Rectangle', name = 'cavity')
cavity.property('pos', ['0','0'])
cavity.property('base', 'center')
cavity.property('size', ['CW', 'CH'])

cavity_tag = cavity.tag()

model.java.component("comp1").geom("geom1").create("arr1", "Array");
model.java.component("comp1").geom("geom1").feature("arr1").active(True);
model.java.component("comp1").geom("geom1").feature("arr1").set("fullsize", ["1", "S_s"]);
model.java.component("comp1").geom("geom1").feature("arr1").set("displ",["0", "S_s"]);
model.java.component("comp1").geom("geom1").feature("arr1").selection("input").set(cavity_tag)

model.save('test.mph')

Thanks!