OK I cant show a complete file (They are big!)

So this is a section of one of the text files

-99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 001037 001015 000946 001044 001059 001049 001074 001064 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 001053 001031 000812 000993 000663 001089 001071 000994 001066 001099 001104 001073 000959 000982 001062 001039 001020 001041 001071 001020 001041 000972 000941 000944 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999 -99999


Basically I want to ignore the -99999's and convert all other numbers EQUAL OR GREATER THAN 0 (I apologise I didn't put the EQUAL in before!) to 1.

Thanks