Accessing Data of a Recorder and Referencing Nodes in the Tree

Hello everyone!

My name is Jan Brandau an I am currently working on my master thesis with the help of Flexsim.

I now like to access a certain node/variable of a recorder. I want to export the "AvgValue" to my custom statistics and therefore want it access this value. The parameter is highligthed in the picture.

My question now is, if this is possible and how it is done. What I am able to do is to access the variable "histomax" for example, but I could not use the functions "getvarnode" or "getnodenum" on my problem. In this case they only return zero.

I hope anyone can help me,

Best regards,

Jan Brandau

Hi Jan,

I dont know if i understand your problem right, but i think you did a wrong use of the command.
What i mean:
To access a node in the tree you can use the ranks or the names ie.

getnodenum(node(">variables/maxspeed",current));

but in this case its a little bit difficult, cause of the name of the parentnode.
( MAIN:/project/model...).
Cause of the structure of the tree its possible to take the rank command to combine it with your getnodenum..

getnodenum(rank(first(node(">variables/graphdata",centerobject(current,1))),5);

Declaration:
- node("variables/graphdata",..) = reference to the graphdata node
- first(..) = reference to the first node in the graphdatanode (MAIN:/project/model...)
- rank(first(..),5) = reference to the 5. node in the first node

This is the code out of the samplemodel where it is implemented in the Textdisplay of the Visualtool.
I hope you understand what i mean, its maybe not the best solution, but it works.
I also have build up a short samplemodel for showing the Value.
Wish you good luck with your work.

Best regards
Tobias

Nice support Tobias. For Jan's understanding. The getvarnode function can also be used instead of
node("variables/graphdata",..).

Martijn

Thanks a lot, that was quick and helpful, exactly what I needed.

I think I should pay more attention to that "rank" command and the Tree Access commands in general. That might be useful, especially as I have many nodes that need to be accessed and searched.

So, thank your very much!

Jan

If you are using the node command you can also use the ranknumbers in stead of the names. So in case of :
getnodenum(rank(first(node(">variables/graphdata",centerobject(current,1))),5);
you can also enter:
getnodenum(node(">variables/graphdata/1/5",centerobject(current,1)));

Steven

That's even better, looks quite elegant now an fits into the rest of my program.

int i = 42
while(i>0)
{
treenode recorder = node("/Recorder",model());
double number = getnodenum(node(concat(">variables/graphdata/",numtostring(i,0,0),"/5"),recorder));
settablenum("DLZ",gettablerows("DLZ"),6,number);
i --;
}

I have already recognized, that there are many ways to solve a problem in Flexsim, some more obvious, some not.

Thank you!