『求助』请问如何用DMAP将一个矩阵输出到一个自己建立的文本文件

do not understand!:-|

MATPCH Will write a matrix using DMI format to the ‘punch’ file
FORM:
MATPCH KGG// $
where:
KGG is the matrix to be punched
NOTE: the matrix will be in DMI format and there will be no labels to identify which dof each term is associated with

或者
MATMOD Creates DMIG in the ‘punch’ file for a matrix
Form:
　　MATMOD KGGEXT,EQEXINS,,,,/M2,/16/1 $
　　where:
KGGEXT = matrix to be written using DMIG (in external sort)
EQEXINS = MSC.Nastran table
M2 = table containing the DMIG in a form which can be read by the MTRXIN module (NOTE: this is a convenient way to send matrices without numeric truncation - see OUTPUT2)

这两种方法都可以输出矩阵到pch文件中，只是输出格式不同
然后在编一个简单的程序，读取pch文件的内容转化成你需要地格式就行了
很简单的

可以用
matpch kgg等语句，输出到同名*.pch文件中