proc format with negative values

[Ronein]

Hello

What is wrong with the code below.

I am using proc format with negative values

29 low< -4000='Lower than -4K'
_
22
200
ERROR 22-322: Syntax error, expecting one of the following: (, ',', -, =.
ERROR 200-322: The symbol is not recognized and will be ignored.

proc format;
value ffmt    
low< -4000='Lower than -4K'
-4000-< -3000='[-4,-3)'
-3000-< -2000='[-3,-2)'
-2000-< -1000='[-2,-1)'
-1000-<- 0='[-1,0)'
0-< 1000='[0,1)'
1000-< 2000='[1,2)'
2000-< 3000='[2,3)'
3000-< 4000='[3,4)'
4000- high ='[4+'
;
run;

[Kurt_Bremser]

A range needs the hyphen.

Do the following:

proc format;
value ffmt    
  low -< -4000 = 'Lower than -4K'
  -4000 -< -3000 = '[-4,-3)'
  -3000 -< -2000 = '[-3,-2)'
  -2000 -< -1000 = '[-2,-1)'
  -1000 -< 0 = '[-1,0)'
  0 -< 1000 = '[0,1)'
  1000 -< 2000 = '[1,2)'
  2000 -< 3000 = '[2,3)'
  3000 -< 4000 = '[3,4)'
  4000 - high = '[4+'
;
run;

Note that I added some visual formatting to make the code more readable.

[Ronein]

Okay,

I see that the error was

low < -4000

and the correct is

low-< -4000

What is the logic here?

proc format;
value ffmt    
low-< -4000='Lower than -4K'
-4000-< -3000='[-4,-3)'
-3000-< -2000='[-3,-2)'
-2000-< -1000='[-2,-1)'
-1000-<- 0='[-1,0)'
0-< 1000='[0,1)'
1000-< 2000='[1,2)'
2000-< 3000='[2,3)'
3000-< 4000='[3,4)'
4000- high ='[4+'
;
run;

[PeterClemmensen · Accepted solution]

This

low < -4000='Lower than -4K'

should be

low -< -4000='Lower than -4K'