Replace Number array with characters

18 次查看（过去 30 天）
Mohit Garg
Mohit Garg 2019-10-17
编辑： Andrei Bobrov 2019-10-18
I have the following code:
function[]=fruit_find(volt)
fprintf("Voltage"+'\t\t'+"Fruit");
fprintf("\n------------------");
a=find(volt>=0 & volt<=10);
p=find(volt>10 & volt<=20);
g=find(volt>20 & volt<=30);
o=find(volt>30 & volt<=40);
u=find(volt>40 | volt<0);
m=[a,p,g,o,u]
m=sort(m);
fprintf("\n%.1f"+'\t\t\t\t'+"A",volt(a));
fprintf("\n%.1f"+'\t\t\t'+"P",volt(p));
fprintf("\n%.1f"+'\t\t\t'+"G",volt(g));
fprintf("\n%.1f"+'\t\t\t'+"O",volt(o));
fprintf("\n%.1f"+'\t\t\t'+"U",volt(u));
end
The output I need should look like this:
Voltage Fruit
---------------------------
18.0 P
33.0 O
31.0 O
34.0 O
15.0 P
37.0 O
10.5 P
48.0 U
50.0 U
38.0 O
...
So I was thinking of making a character array with the letters in the indexes of the numbers and printing them in fprintf, are their better ways to do this (without loops).
volt = [18 33 31 34 15 37 10.5 48 50 38 35 39 42 33 31 1 5 9 13 11 27 35 -1 46 22 6 19 36];
Thank you

请先登录，再回答此问题。

回答（1 个）

Andrei Bobrov
Andrei Bobrov 2019-10-17
编辑：Andrei Bobrov 2019-10-18
volt = [18 33 31 34 15 37 10.5 48 50 38 35 39 42 33 31 1 5 9 13 11 27 35 -1 46 22 6 19 36];
edges = [-inf,0:10:40,inf];
fruit = discretize(volt,edges,{'u','a','p','g','o','u'});
T = table(volt(:),fruit(:),'VariableNames',{'Voltage','Fruit'});
  2 个评论
Mohit Garg
Mohit Garg 2019-10-18
Is there an easier way, with less complicated methods (that uses the find function as I have to use it)?
Andrei Bobrov
Andrei Bobrov 2019-10-18
编辑：Andrei Bobrov 2019-10-18
"Easier way" with find ! :)
edges = 0:10:40;
[~,i] = find(volt(:)' > edges(:));
ii = accumarray(i,1) + 1;
s = {'u','a','p','g','o','u'}';
T = table(volt(:),s(ii),'VariableNames',{'Voltage','Fruit'});
else "easier way" without find
i = sum(volt(:)' > edges(:)) + 1;
s = {'u','a','p','g','o','u'}';
T = table(volt(:),s(i),'VariableNames',{'Voltage','Fruit'});

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by