Rules for Writing Expressions. Functions for Working with Variables

ABS

Return absolute value of

abs ( -20 ) = 20

ACOS

Calculate arccosine

acos ( 0.5 ) = 60

ASIN

Calculate arcsine

asin ( 0.5 ) = 30

ATAN

Calculate arctangent

atan ( 1 ) = 45

CEIL

Find integer ceiling

ceil ( 3.98 ) = 4

COS

Calculate cosine        

cos ( 60 ) = 0.5

FLOOR

Find largest integer less than or equal to argument

floor ( 3.13 ) = 3

HYPOT

Calculate hypotenuse of right triangle

hypot ( 3, 4 ) = 5

INT

Round to nearest integer

int ( 3.13 ) = 3

LOG

Calculate natural logarithm

log ( 1 ) = 0

LOG10

Calculate base-10 logarithm

log10 ( 10 ) = 1

RACOS

Calculate arccosine, in radians

racos ( 0.5 ) = 1.0472

RASIN

Calculate arcsine, in radians

rasin ( 1 ) = 1.5708

RATAN

Calculate arctangent, in radians

ratan ( 2 ) = 1.10715

RCOS

Calculate cosine, angle input in radians

rcos ( 1 ) = 0.540302

ROUND(ARG1, ARG2 )

Round the value ARG1 with accuracy ARG2.

Round ( 2.357, 0.25 ) = 2.25

Round ( 2.357, 0.1 ) = 2.4        

RSIN

Calculate sine, angle input in radians

rsin ( 1 ) = 0.841741

RTAN

Calculate tangent, angle input in radians

rtan ( 1 ) = 1.55741

SIN

Calculate sine

sin ( 30 ) = 0.5

SQRT

Find square root

sqrt ( 16 ) = 4

TAN

Calculate tangent

tan ( 45 ) = 1

ATOF("10.5")

Convert the string "10.5" to the real number 10.5

ATOT(1.5,0.01,1,0)LTOT(1.5,0.01,1,0) SATOT(1.5) SLTOT(1.5)

Convert the real number 1.5 to a string per the format specified by the rest three arguments

FTOT(“variable name”)

The function of conversion a numeric value to text. It converts a numeric variable or expression to the text using a comma instead of a dot.

TGET()                

This function allows the user to obtain textual properties of the elements: the name of the material of 3D operations, the values of text variables of the fragment.

$text = tget(“0xD000001”,“$textvar”) – returns the string value from variable $textvar.

$mater = tget(“Extrusion_0”,”Material”)  – defines material for the operation “Extrusion _0”.

TGETV ("system variable")        

Get the string value of a system variable or characteristics of the current drawing.

The entire list of parameters whose values can be obtained with the help of the function tgetv, is given in the Attachment II of this chapter.

TMGETV ("system variable")        

Get the string value of a system variable of the assembly if the current drawing is inserted there as a fragment.

This function works similar to the function TGETV.

ERROR("STRING")        

Display a user-defined message "STRING" on the screen

WARN("STRING")or  WARN("STRING","element name")

Display a user-defined message "STRING" in the diagnostics window. Include the element name in the message.

FTOA(10.5)

Convert the real number 10.5 to the string "10.5"

FIXNODENAME(n)

Get the name of the fragment's node used for inserting the current document as a fragment by fixing points.

This function is helpful for creating the libraries of logical and algorithmic schemes. It helps to orient direction of connecting arrow between elements.

Input parameter: the number of the fragment's fixing point.

GET("STR","P")        

Get the real value of the parameter P of the system element named STR. Instead of element’s name it is possible to specify its identifier (ID).

The entire list of parameters whose values can be obtained with the help of the function get, can be found in the Attachment II of this chapter.

GETV("NAME_Page",N) or  GETV("NAME",N)        

Get the value of the service parameter of the document named NAME. N – is a value that will be returned by the function if it does not find the indicated parameter.

Certain parameters are defined separately for each 2D page of the document. In this case, the ending “_Page” is added to the name of the parameter, where “Page” – is a name of desired page of the current document. If the page name is not specified, the parameter value will be returned for the first page.

The entire list of parameters whose values can be obtained with the help of the function getv can be found in the Attachment II of this chapter.

SETG/TSETG("NAME",N)        

Set the value N of a numerical/string global variable named NAME

GETG/TGETG("NAME",N)        

Get the value of a numerical/string global variable named NAME.

DISTANCE ("NAME1", "NAME2")        

Get the distance between the entities specified by their names or Ids.

MEASURE(("NAME1", "NAME2", "RELATION")

Get the value of requested relation "RELATION" between specified elements "NAME1" and "NAME2" (elements' names or IDs can be used as input values).

ISFRAGMENT()

Find the assembly hierarchy level of a fragment. For the current drawing, returns zero.

MAX(N1,...,NN)        

Find the maximum value among the input set.

MIN(N1,...,NN)

Find the minimum value among the input set.

STRLEN("STR")

Find the number of characters in the string STR

CHECK("file name", type)

Find a file in the specified folders.

TWORD("string", N)

Get a word from a string. $NAME=TWORD("William Henry Gates", 2) – results in assigning the value Henry to the variable $NAME.

TPART("string",N,N)        

Get a substring.

TFIND("string1", "string2")        

Searches for the substring "string2" in the string "string1". Returns an integer value equal to the position number of the first substring occurrence, counted from 1. In the case of an error (the substring is not found) returns 0.

TREPLACE("string1", "string2", "string3")        

Replaces the substring "string2" by the substring "string3" in the string "string1". Returns a character string, which is the input string with the entry replaced.

GRAPH("Graph_name",X)

Get the value of the function F(x), corresponding to the X argument value, for the graph named "Graph_name".        

DBF(arg1, arg2, arg3)

A dBASE database query.

arg1 – database name. The database name can be defined by a string constant, variable or expression.

arg2 – the name of the field to copy from. The field name can be defined by a string constant, variable or expression.

arg3 – the condition for copying. The condition can be defined by a string constant, variable or expression.

DBFWIN(arg1, arg2, arg3)

A dBASE database query. Also converts text from DOS to WINDOWS format. Is used for correct handling of local language text. The parameters are analogous to those of the function dbf.

FIND(database_field, condition_1, condition_2, ...)

Get a value from the internal database  The function returns the value of the specified field database_field of a record satisfying the conditions condition_1, condition_2. If no suitable record exists, the function outputs the error message "Wrong record number".

MDB(arg1, arg2, arg3, arg4)

An Access database request.

arg1 - database name. The database name can be defined by a string constant, variable or expression.

arg2 -the table name in the database. Can be defined by a string constant, variable or expression.

arg3 - the name of the field to copy from. The field name can be defined by a string constant, variable or expression.

arg4 - the condition for copying. The condition can be defined by a string constant, variable or expression.

For example:

mdb ( "c:\\T-FLEX_USER.mdb", "USER", "FULLNAME", "Code ={kod}" )

This means: select the value from the table “USER” of the database “T-FLEX_USER” from the field “FULLNAME” under condition that the value of the field “Code” is equal to the value of the variable kod.

It is worth noting that the last operand of the function, specifying condition for record selection, can be written in the form of SQL query and then it must correspond to the WHERE clause of the SELECT command.

If, upon writing the condition, the text variables are used, the expression will take the following form:

mdb ( "c:\\T-FLEX_USER.mdb", "USER", "FULLNAME", "Post=\"{$Dol}\"" ).

REC(condition)

Get the Id of a record in the internal database. condition -  a logical expression, taking values True or False. The expression may contain members - queries to the fields of the database.

FREC(arg1, arg2, arg3, arg4)        

Get the Id of a record in the internal database or in the database by reference, where the value in the specified column matches most closely the specified value.

arg1 – a database column, in which the search is performed. Must be of real or integer type;

arg2 –sought value;

arg3 –search option. Possible values:

0 –find nearest value;

-1 –find nearest lesser value;

1 –find nearest greater value.

arg4 –defines the column type to perform the search (the order in which the values occur in this column):

0 -the values are not in order; the search is performed over all database records;

1 –the values in the column are ordered ascending or descending.

Once the difference between the value sought and the value in the current column of the database is greater than in the previous one, the search completes. The parameters arg3 and arg4 are optional. If these are skipped, the default values are used:

arg3 = 0; search for nearest value;

arg4 = 0; column not ordered;

FTOT

Executes the transformation of a real variable or expression into the text with the use of comma instead of a period.

VAL(record_number, database_field, offset)

Get the value from the internal database by the record Id. record_number -an arbitrary arithmetical expression, that yields an integer;

database_field -a field query;

offset (optional) - the number of the column for selecting value (calculated from the  field specified in the second parameter).

The offset can be assigned to a variable and can be both positive and negative. If offset value is 0, function returns the field specified in the second parameter. The same would happen if the third parameter is not used.

#.<name>

Get the number of records in the specified internal database