rounding elements in array to nearest 0.25
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Srinivas
le 25 Août 2011
Commenté : Matthias Schneider
le 4 Déc 2023
i need to round off some numbers to nearest quarter , with an option to round up or round down to nearest quarter
for e.g. For an array for (5,1) with following values
1373.698
1385.024
1394.82
1400.436
1396.532
output for rounding up to closest 0.25 will result in
1373.75
1385.25
1395.00
1400.50
1396.75
output for rounding down to closest 0.25 will be
1373.50
1385.00
1394.75
1400.25
1396.50
I am not sure how to create such a function which gives this output, please help .
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Réponse acceptée
Friedrich
le 25 Août 2011
Hi,
I think you are looking for:
in = [1373.698
1385.024
1394.82
1400.436
1396.532];
%round up
up = floor(in) + ceil( (in-floor(in))/0.25) * 0.25
%round down
down = floor(in) + floor( (in-floor(in))/0.25) * 0.25
2 commentaires
Plus de réponses (2)
Walter Roberson
le 25 Août 2011
The previous answers look more complex than needed
%round up
up = ceil(in * 4) / 4;
%round down
down = floor(in * 4) / 4;
2 commentaires
Anders Tagmose Lundsfryd
le 17 Mar 2021
Modifié(e) : Anders Tagmose Lundsfryd
le 6 Avr 2021
If you want to round to the nearest 0.25 both up and down, then do:
%roudn to nearest 0.25
updown = round(in * 4)/4;
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