MATLAB: Data point in plot connecting randomly to each other

MATLABplotting

The pattern of the plot is obviously going up from 0-2 then all the way down, I do not know why are the points randomly connecting to a point further away and not connecting like it used to (by ascending order).

Best Answer

I would sort the x values and sort the y values based on how the x values were sorted.

You can do this with

[sorted_array sorted_order] = sort(x);
y = y(sorted_order;)

Related Solutions

MATLAB: How to arrenge the calculated distances in ascending order

The sort command can sort in ascending and descending order. See "help sort".

MATLAB: Sorting data from table

T - your table with variables: month, day, year and prutok.

ii = findgroups(T.year);
Prutok = accumarray(ii,T.prutok,[],@(x){sort(x,'descend')});
for jj = 1:numel(Prutok), plot(Prutok{jj}); hold on; end

other variant

Days1 = day(datetime(T{:,{'year','month','day'}}),'dayofyear');
c = findgroups(T.year);
Anew = sort(accumarray([Days1,c],T.prutok,[],[],nan),'descend');
plot(Anew)

(added)

and the best variant by Guillaume and Peter

hold on
varfun(@(x)plot(sort(x,'descend')),T,'GroupingVariable','year','InputVariable','prutok');
hold off

Best Answer

Related Solutions

MATLAB: How to arrenge the calculated distances in ascending order

MATLAB: Sorting data from table

Related Question