Routine Name: setupgate Description: Sets up the internal tables of tabgate or table elements, based on a generic equation describing the values of the entries. Usage: setupgate channel-element table A B C D F -size n \ -range min max -noalloc channel-element gate This must be a tabgate or a table The name of the table (must be alpha or beta for tabgates, "table" for table elements) A-F Coefficients A to F of the table equation (see below). -size n Number of divisions in the table (default = 3000). -range min max Range of the table (default: min = - 0.100; max = 0.050). -noalloc used to prevent allocation of the table when the table has already been allocated with a call to TABCREATE or a previous use of setupgate This routine makes it easy to set up the internal tables of tagate or table elements when the equations describing them are of the form: y(x) = (A + B * x) / (C + exp((x + D) / F)) setupgate calls the TABCREATE action of the element to allocate tables with n divisions (n + 1 entries) representing x values from min to max. It then evalutes the functions at these points to fill the tables. Example: Notes: see Scripts/neurokit/prototypes/newbulbchan.g The setupgate routine may not be used on tabchannels. The state equation described above has a removable singularity when C = -1 at the point x = -D. common case). In this case the routine may generate inaccurate results due to roundoff errors. See also: setupalpha, setuptau, Tables