table less than operator

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sani
sani 2020-1-17
评论： sani 2020-1-18
hi,
I'm having this error : Undefined operator '<' for input arguments of type 'table'.
how can I write the operator less than for table?
I ttied using gt(A,B) and lt(A,B) but it still give me this error.
I still want to use table and not to convert the table to array.
thanks!
  2 个评论
Walter Roberson
Walter Roberson 2020-1-17
What does it mean to you for a table to be less than something? Are you sure you do not instead want to compare the content of a variable in the table to something?
sani
sani 2020-1-17
Hi,
yes this what I'm trying to do

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回答（1 个）

Matt J
Matt J 2020-1-17
Are you sure you do not instead want to compare the content of a variable in the table to something?... yes this what I'm trying to do.
Then why are you trying to apply < or > to the entire table? You should be applying it to a specific variable, like in the following example:
T =
5×6 table
LastName Age Smoker Height Weight BloodPressure
_________ ___ ______ ______ ______ _____________
'Sanchez' 38 true 71 176 124 93
'Johnson' 43 false 69 163 109 77
'Li' 38 true 64 131 125 83
'Diaz' 40 false 67 133 117 75
'Brown' 49 true 64 119 122 80
>> T.Age<=40
ans =
5×1 logical array
1
0
1
1
0
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Walter Roberson
Walter Roberson 2020-1-18
Change
prev = T1(i,1);
to
prev = T1{i,1};

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