SAS--exclude the first few rows -


i have set of data below. need exclude first few rows 'counts <100' based on model. once counts >100, following rows kept no matter counts > 100 or <100.

|make |model   |soldmonth|counts| |ford |class_c |jan_2015 |80    | |ford |class_c |feb_2015 |90    | |ford |class_c |mar_2015 |70    | |ford |class_c |apr_2015 |120   | |ford |class_c |may_2015 |130   | |ford |class_c |jun_2015 |50    | |ford |class_c |jul_2015 |70    | |ford |class_c |aug_2015 |140   | |ford |class_c |sep_2015 |110   |    |ford |maxi    |jan_2015 |20    | |ford |maxi    |feb_2015 |50    |   |ford |maxi    |mar_2015 |80    | |ford |maxi    |apr_2015 |120   |     |ford |maxi    |may_2015 |130   | |ford |maxi    |jun_2015 |110   |    |ford |maxi    |jul_2015 |180   | |ford |maxi    |aug_2015 |90    | |ford |maxi    |sep_2015 |110   |

here want get:

|make |model   |soldmonth |counts|     |ford |class_c |apr_2015  |120   | |ford |class_c |may_2015  |130   | |ford |class_c |jun_2015  |50    | |ford |class_c |jul_2015  |70    | |ford |class_c |aug_2015  |140   | |ford |class_c |sep_2015  |110   |     |ford |maxi    |apr_2015  |120   |   |ford |maxi    |may_2015  |130   | |ford |maxi    |jun_2015  |110   |    |ford |maxi    |jul_2015  |180   | |ford |maxi    |aug_2015  |90    | |ford |maxi    |sep_2015  |110   |

any assistance appreciated!

you can create flag set when first value ge 100 found , use determine observations output.

data ford;    input (a b c)($) y;    cards; ford class_c jan_2015 80 ford class_c feb_2015 90 ford class_c mar_2015 70 ford class_c apr_2015 120 ford class_c may_2015 130 ford class_c jun_2015 50 ford class_c jul_2015 70 ford class_c aug_2015 140 ford class_c sep_2015 110 ford maxi jan_2015 20 ford maxi feb_2015 50 ford maxi mar_2015 80 ford maxi apr_2015 120 ford maxi may_2015 130 ford maxi jun_2015 110 ford maxi jul_2015 180 ford maxi aug_2015 90 ford maxi sep_2015 110 ;;;;    run; proc print;    run; data ford2;    set ford;    b notsorted;    if first.b f=0;    if not f , y lt 100 f+0;    else f=1;    if f;    run;  proc print;    run;

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