| nvsbl | Set the visibility of neurons |
| <graphic> | name of the graphic structure |
| -expr <expr>; | boolean expression to be evaluated using the variables in the neurons |
| [-v] | verbose evaluation |
This command evaluates the given expression for each neuron and sets visible those neurons, which return a TRUE value. Typically the fields in the expression should be variables of the neurons.
Example (ex7.16): The following commands hide those neurons, which do not represent any data records.
...
NDA> somtr -d predata -sout s1 -l 5
...
NDA> somcl -d predata -s s1 -cout cld1
NDA> clstat -d boston -c cld1 -dout statdata -hits
...
NDA> mkgrp grp1 -s s1
NDA> setgdat grp1 -d statdata
...
NDA> nvsbl grp1 -expr 'statdata.hits' > 0; -v
{{10} > {0}} => TRUE}
{{0} > {0}} => FALSE}
...
