Match strings from 2 tables

Hi, I have 2 tables example:
TA=
'Name' 'Code'
'AFG' 120
'CAN' 210
'BER' 121
'FIJ' 910
'KOS' 991
'HAW' 101
'CHN' 211
TB=
'Name' 'Value'
'AFG' 0.5
'CAN' 1.2
'BER' 2.1
'FIJ' 9.1
'CHN' 0.2
'HAW' 1.6
I need a table TC in order of TA but containg the corresponding value from TB
'Name' 'Code' 'Value'
'AFG' 120 0.5
'CAN' 210 1.2
'BER' 121 2.1
'FIJ' 910 9.1
'KOS' 991 NaN
'HAW' 101 1.6
'CHN' 211 0.2
I know I need to use the ismember function for this, but not sure how to implement it here

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Stephen23
Stephen23 el 18 de Feb. de 2020
Editada: Stephen23 el 18 de Feb. de 2020

1 voto

Method one: outerjoin (TC rows may be in a different order to TA):
>> TC = outerjoin(TA,TB,'MergeKeys',true)
TC =
Name Code Value
_____ ____ _____
'AFG' 120 0.5
'BER' 121 2.1
'CAN' 210 1.2
'CHN' 211 0.2
'FIJ' 910 9.1
'HAW' 101 1.6
'KOS' 991 NaN
Method two: outerjoin (TC rows are in the same order as TA):
>> [TC,idx] = outerjoin(TA,TB,'MergeKeys',true);
>> [~,idy] = sort(idx);
>> TC = TC(idy,:)
TC =
Name Code Value
_____ ____ _____
'AFG' 120 0.5
'CAN' 210 1.2
'BER' 121 2.1
'FIJ' 910 9.1
'KOS' 991 NaN
'HAW' 101 1.6
'CHN' 211 0.2
Method three: ismember (TC rows are in the same order as TA):
>> TC = TA;
>> TC{:,'Value'} = NaN;
>> [X,Y] = ismember(TA.Name,TB.Name);
>> TC.Value(X) = TB.Value(Y(X))
TC =
Name Code Value
_____ ____ _____
'AFG' 120 0.5
'CAN' 210 1.2
'BER' 121 2.1
'FIJ' 910 9.1
'KOS' 991 NaN
'HAW' 101 1.6
'CHN' 211 0.2

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