# double y axis bar chart to have bars next to each other

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Andrew Alkiviades on 7 Sep 2013
hi I have plotted a double y axis bar chart with the code below. It seems that the bars are overlaying. I am trying to get the bars so that they are next to each other on the same x position
Any help would be appreciated!
Wind_monthly_speed = [4.76 3.99 3.43 3.68 5.71 7.09 5.56 5.43 5.4 4.9 3.88 4.53];
Solar_monthly = [5.87 6.52 6.99 6.45 5.6 4.84 5.17 5.66 5.85 5.9 5.29 5.41];
month = 1:1:12;
average_monthly_wind_density = 1.2;
wind_monthly_power = 0.5*average_monthly_wind_density.*(Wind_monthly_speed.^3);
figure;
x1 = 1:12;
y1 = wind_monthly_power;
y2 = Solar_monthly;
plotyy(x1,y1,x1,y2,'bar','bar')

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Andrew Alkiviades on 7 Sep 2013
thanks for your reply. I need the 2 axis because there is about a factor of 100 between the 2 vectors and they also use different units so i need the 2 axis
dpb on 7 Sep 2013
That'll end up scaling them grossly anyway, why not simply multiply the one by 100 and annotate it to note the change?
Andrew Alkiviades on 7 Sep 2013
thanks dpb I have updated the initial question above. I will have to use the vectors above, I cannot modify unfortunately

dpb on 7 Sep 2013
Edited: dpb on 8 Sep 2013
bar(x1', [y1' y2'])
but suit yourself. As a starting point try
ha=plotyy(x1-0.5,y1,x1+0.5,y2,'bar','bar');
set(ha,'xlim',[-1 14])
set(ha,'xtick',1:12)
Then get the handles of the bar objects and modify colors and width to enhance visibility, etc., etc., etc., ... as desired
Rather than use +/-0.5, try +/-0.2 save the additional handles from the plotyy() call--
[hyy,hl,ho]=plotyy(x1-0.2,y1,x1+0.2,y2,'bar','bar');
set(hyy,'xlim',[-1 14],'xtick',1:12)
set(ho,'barwidth',0.4)
set(hl,'facecolor','r','barwidth',0.4)