Re: [Rd] missing value break my if clause and crash my program

2012-03-01 Thread Uwe Ligges
On 29.02.2012 13:36, zisheng xing wrote: I have a program which is designed to read through a dbf file and carry out certain amount of further calculation if one condition obtained from the newly read line. The condition to determine if the calculation can be done is a if-clasue (i.e. if(m>0

[Rd] missing value break my if clause and crash my program

2012-02-29 Thread zisheng xing
I have a program which is designed to read through a dbf file and carry out certain amount of further calculation if one condition obtained from the newly read line. The condition to determine if the calculation can be done is a if-clasue (i.e. if(m>0). Unfortunately, when m is missing, the prog