### Re: problem with long input in MATC?

Posted:

**04 Nov 2018, 21:57**Hi sage12,

the MATC expression has a length limit of 128 characters (viewtopic.php?f=3&t=110).

For expressions longer than 128 characters, we have to formulate a function (the function feature in elmer has no limit in length) and link it as a function in MATC expression, as shown in the following examples.

1. In, viewtopic.php?f=3&t=4070 , and function test(x) is defined in the solver input file. Moreover, we can utilize functions for longer expressions in connection to material properties (

2. In, https://github.com/anilkunwar/elmerfem/ ... oKthml.sif, and function test(x) is defined in the solver input file.

The name of the function is arbitrary:

anyfuncname(y), where y is arbitrarily chosen (= it can be any alphabet), and within MATC expression, it is written as : anyfuncname(tx)

Yours Sincerely,

Anil Kunwar

the MATC expression has a length limit of 128 characters (viewtopic.php?f=3&t=110).

For expressions longer than 128 characters, we have to formulate a function (the function feature in elmer has no limit in length) and link it as a function in MATC expression, as shown in the following examples.

1. In, viewtopic.php?f=3&t=4070 ,

Code: Select all

`Heat Source = Variable Coordinate 1, Coordinate 2, Time; Real MATC "test(tx)"`

**can be found from the post illustrated in case of Ja(t) function used as $ Ja(0) for current density 3, in the same link**).2. In, https://github.com/anilkunwar/elmerfem/ ... oKthml.sif,

Code: Select all

```
Heat conductivity(3,3) = Variable Coordinate 1, Coordinate 2
Real MATC "test(tx)"
```

The name of the function is arbitrary:

anyfuncname(y), where y is arbitrarily chosen (= it can be any alphabet), and within MATC expression, it is written as : anyfuncname(tx)

Yours Sincerely,

Anil Kunwar