how can i get binary interaction data of NRTL-1 (MEA H2O) AIJ value at matlab

clc
clear
Aspen = actxserver('Apwn.Document.37.0');
Aspen.invoke('InitFromArchive2', 'C:\Users\ASPENPC\Desktop\a7777\77777.apw') 
Aspen.visible = 1;
data = Aspen.Application.Tree.FindNode("\Data\Properties\Parameters\Binary Interaction\NRTL-1\Input\VAL1\NRTL\MEA H2O").value

% i can't get aspen data only this nodepath

Answer 1

[neha agarwal]

I want to connect aspen properties with MATLAB. like this:

AspenProperties.Application.Tree.FindNode("\Data\Properties\Analysis\BINRY-1\Output\Prop Data\PROPTAB\VAPOR MOLEFRAC BENZENE 2").value

But its showing an error: Dot indexing is not supported for variables of this type.

Please help me out

[Walter Roberson]

The FindNode() call is returning [] and you are not checking for that possibility.

[neha agarwal]

Thank you so much for your response and valuable time. but I am no getting your point. If I go for "\Data\Blocks or "\Data\Streams, its working but for "\Data\Properties its not working. Please help me.

[Walter Roberson]

Please show the output of the following:

parts = string({'Data' 'Properties' 'Analysis' 'BINRY-1' 'Output' 'Prop Data' 'PROPTAB' 'VAPOR MOLEFRAC BENZENE 2'});

oldcurrent = [];
found_something = false;
ended_early = false;
for idx = 1 : length(parts)
   thistree = "\" + strjoin(parts(1:idx), "\");
   currentnode = AspenProperties.Application.Tree.FindNode(thistree);
   if isempty(currentnode); ended_early = true; break; end
   found_something = true;
   oldcurrent = currentnode;
end

if found_something
    if ended_early
        fprintf('found tree as far as "%s" but no further\n', thistree);
    else
        fprintf('found the complete tree "%s"\n', thistree);
    end
    fprintf('methods available for further exporation:\n');
    methods(oldcurrent)
else
    fprintf('did not find any node at all, not even "%s"\n', thistree);
end

[neha agarwal]

the output is as follows:

found tree as far as "\Data\Properties\Analysis\BINRY-1\Output\Prop Data\PROPTAB\VAPOR MOLEFRAC BENZENE 2" but no further

methods available for further exporation:

Methods for class Interface.8E567522_F9BA_11CF_90B2_0000C0A810C4:

AddClassAttribute DeleteClassAttribute NextIncomplete ValueForUnit release

AttributeType Export PrintUseful addproperty saveobj

AttributeValue FindNode Reconcile delete set

BrowseNext HasAttribute RemoveAll deleteproperty

ClassAttributeType HasClassAttribute RenameChild events

ClassAttributeValue Hide Reveal get

Clear NewChild SetValueAndUnit invoke

Delete NewID SetValueUnitAndBasis loadobj

[Walter Roberson]

I had a slight mistake in the output. The proper output would have reported

found tree as far as "\Data\Properties\Analysis\BINRY-1\Output\Prop Data\PROPTAB\" but no further

parts = string({'Data' 'Properties' 'Analysis' 'BINRY-1' 'Output' 'Prop Data' 'PROPTAB' 'VAPOR MOLEFRAC BENZENE 2'});

oldcurrent = '\';
found_something = false;
ended_early = false;
for idx = 1 : length(parts)
   thistree = "\" + strjoin(parts(1:idx), "\");
   currentnode = AspenProperties.Application.Tree.FindNode(thistree);
   if isempty(currentnode); ended_early = true; break; end
   found_something = true;
   oldcurrent = currentnode;
end

if found_something
    if ended_early
        fprintf('found tree as far as "%s" but no further\n', oldcurrent);
    else
        fprintf('found the complete tree "%s"\n', thistree);
    end
    fprintf('methods available for further exporation:\n');
    methods(oldcurrent)
else
    fprintf('did not find any node at all, not even "%s"\n', thistree);
end