TCL: elements linked to a node
Best Answer
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Hi,
can you try double quotes instead of single?
Check out the help for the syntax:
https://help.altair.com/hwdesktop/hwd/topics/reference/hm/_createmark.htm?zoom_highlight=createmark
There are also some examples on the bottom of the page.
A little tip:
You see in the bottom-left corner a message how many elements are selected after the *createmark command.
That helps me to check immediately if it's working correctly.
Have fun with scripting!
1
Altair EmployeeAnswers
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Hi,
can you try double quotes instead of single?
Check out the help for the syntax:
https://help.altair.com/hwdesktop/hwd/topics/reference/hm/_createmark.htm?zoom_highlight=createmark
There are also some examples on the bottom of the page.
A little tip:
You see in the bottom-left corner a message how many elements are selected after the *createmark command.That helps me to check immediately if it's working correctly.
Have fun with scripting!
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Hello @Stéphane Combet,
In addition of Marc's proposal, you may try to use *findmark , and to find nodes attached to elements.
Below is a video (the corresponding script can be retrieved from the comments) showing how to use it:
https://youtu.be/t8NkIQC82Ks?si=Ye3RL0wWbk8TqRgJHope this helps,
Michael
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Marc Arnold said:
Hi,
can you try double quotes instead of single?
Check out the help for the syntax:
https://help.altair.com/hwdesktop/hwd/topics/reference/hm/_createmark.htm?zoom_highlight=createmark
There are also some examples on the bottom of the page.
A little tip:
You see in the bottom-left corner a message how many elements are selected after the *createmark command.That helps me to check immediately if it's working correctly.
Have fun with scripting!
Thank you very much Marc, this was the point! double quote, not single.
About syntax, I am sometimes in trouble with what is in the help. For exemple on https://2021.help.altair.com/2021/hwdesktop/hwd/topics/reference/hm/_nodemarkaddtempmark.htm in the exemples there are parameters in parenthesis:
*createmark(nodes,1) 100 101 102 103This does not work in my case. I have to change this line coming from the online help to this:*createmark nodes 1 100 101 102 103to make it works.Thanks for the tip by the way, really helpfull!
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Michael Herve_21439 said:
Hello @Stéphane Combet,
In addition of Marc's proposal, you may try to use *findmark , and to find nodes attached to elements.
Below is a video (the corresponding script can be retrieved from the comments) showing how to use it:
https://youtu.be/t8NkIQC82Ks?si=Ye3RL0wWbk8TqRgJHope this helps,
Michael
Thank you Michael. Good point with this function findmark, but I can't get what would be the benefit in my case? Anyway it's always good to have some short code tutorial like this one, thanks again.
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Stéphane Combet said:
Thank you Michael. Good point with this function findmark, but I can't get what would be the benefit in my case? Anyway it's always good to have some short code tutorial like this one, thanks again.
Hello @Stéphane Combet ,
you're right, there should be no added value in your case, maybe it will be more useful next time
Best Regards,
Michael
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Stéphane Combet said:
Thank you very much Marc, this was the point! double quote, not single.
About syntax, I am sometimes in trouble with what is in the help. For exemple on https://2021.help.altair.com/2021/hwdesktop/hwd/topics/reference/hm/_nodemarkaddtempmark.htm in the exemples there are parameters in parenthesis:
*createmark(nodes,1) 100 101 102 103This does not work in my case. I have to change this line coming from the online help to this:*createmark nodes 1 100 101 102 103to make it works.Thanks for the tip by the way, really helpfull!
To be honest, I have never used parentheses in tcl, only square brackets or curly brackets.
If you notice strange behavior, you can check the newest documentation. Just replace the version in the link:
https://2023.help.altair.com/2023/hwdesktop/hwd/topics/reference/hm/_nodemarkaddtempmark.htm
There is only the correct version:
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Sorry to be so stupid, but I can't use the lists in a nice way... Syntax issues
Why this leads to 9 elements selected:
*createmark elems 1 "by node id" 20072267 20072268 20072271 20072273Whereas this leads to only 4 elements (those around the first node of the list $selectedNodes):
*createmark elems 1 "by node id" $selectedNodesThank you!
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Stéphane Combet said:
Sorry to be so stupid, but I can't use the lists in a nice way... Syntax issues
Why this leads to 9 elements selected:
*createmark elems 1 "by node id" 20072267 20072268 20072271 20072273Whereas this leads to only 4 elements (those around the first node of the list $selectedNodes):
*createmark elems 1 "by node id" $selectedNodesThank you!
Hello again @Stéphane Combet ,
you just experienced one tricky concept of *createmark
In its implementation, the command considers the output of $selectedNodes as separate arguments, and it takes only the first id of the node list
To avoid it, every time you refer to a list in *createmark, you need to preceed it by the tcl command eval:
eval *createmark elems 1 "by node id" $selectedNodes
Hope this helps,
Michael
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Alternatively, you can write {*} in front of the variable you want to "write out":
*createmark elems 1 "by node id" {*}$selectedNodesYou have to check if the API expects a list or separate arguments. If you need seperate arguments and have a list variable, use {*} or the command from Michael. I guess Michael's answer is the safer choice
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Hi,
Check below code to get element ID list.
#Get attached ElementIDs of node
#TempNodesList (Node ID list)hm_markclear elements 2
hm_markclear nodes 1
hm_createmark nodes 1 $TempNodesList
*findmark nodes 1 1 1 elements 0 2
set elemIDList [hm_getmark elements 2]
hm_markclear nodes 1
hm_markclear elements 20
