Why can't I put a line between point and errorbar in ggplot?

Question

I'm trying to add simple error bars with the ggplot function geom_errobar(), as I found the code on the web.

The function works, but I don't know why it doesen't put the line between points and bars.

In all examples releted to the explanation of the codes that I found online, there are always a line between points and bars and I used the same code!!!

Short dataset

structure(list(Daytime = structure(c(17683, 17684, 17685, 17686, 
17687, 17688, 17689, 17690, 17691, 17692, 17693, 17694, 17695, 
17696, 17697, 17698, 17699, 17700, 17701, 17702, 17703, 17704, 
17705, 17706, 17707, 17708, 17709, 17710, 17711, 17712), class = "Date"), 
    mz33_flux = c(0.0269902340425532, -0.0186273777777778, -0.0372041666666667, 
    -0.065895625, -0.0371895833333333, -0.0685152173913043, 0.0733608695652174, 
    -0.0462857446808511, 0.03306875, -0.0309327083333333, 0.0240914893617021, 
    0.0355631578947368, NA, NA, NA, NA, NA, NA, 1.32546206896552, 
    0.039425, -0.00267916666666666, -0.0299131111111111, -0.207063829787234, 
    0.0057391304347826, -0.0350862790697674, -0.0324617021276596, 
    -0.0234354838709677, -0.0835595744680851, 0.0966265957446808, 
    -0.0124054545454545), mz33_err = c(3.90466069268418e-05, 
    3.94858430704017e-05, 4.24302022766031e-05, 4.46591337717942e-05, 
    6.21204244886397e-05, 4.10959733730185e-05, 5.64638070309499e-05, 
    6.44166726780267e-05, 3.82000202086123e-05, 4.15227904947797e-05, 
    3.8179357878616e-05, 3.09029031996929e-05, NA, NA, NA, NA, 
    NA, NA, 0.00102801852277132, 3.86575696937507e-05, 2.93166992687375e-05, 
    3.24126251499621e-05, 5.68095205509716e-05, 7.24229986669278e-05, 
    5.91711611807517e-05, 7.34947840597977e-05, 6.30692813002305e-05, 
    5.4382594393826e-05, 9.84397824539971e-05, 3.30427039605518e-05
    )), row.names = c(NA, 30L), class = "data.frame")

ggplot script

ggplot(df,aes(x=Daytime))+
  geom_line(aes(y=mz33_flux,colour="y"), size = 1)+
  geom_errorbar(aes(ymin=mz33_flux-mz33_err, ymax=mz33_flux+mz33_err), width=1,position=position_dodge(0.05),color="green")

I expect to have connection lines between point and errorbars, as I see in the example plot of the function.

Answer 1

I think that everything is working fine, but you've a very small error, so you have not connection between points and errorbars; if you multiply your error by 1000, you'll have what you're searching for (clearly the data are different):

ggplot(df,aes(x=Daytime,y=mz33_flux,colour="y"), size = 1)+
  geom_line()+
  geom_point() +
  geom_errorbar(aes(ymin=mz33_flux-mz33_err*1000, ymax=mz33_flux+mz33_err*1000), 
                width=1,
                position=position_dodge(0.05),
                color="green")