[AstroPy] how to mark spectral lines in matplotlib?

[Joe Philip Ninan]

Hi,
There might be better options,
but you can always use annotate function in matplotlib inside a for loop to
add all the spectral line labels.
Following is an example to show the syntax.
plt.annotate(r'H$\alpha$', xy=(6563, 1.2), xytext=(6600, 1.7),
arrowprops=dict(arrowstyle="->",facecolor='black') )
-cheers
joe


On 14 December 2013 21:44, gonghang.naoc <ghang.naoc at gmail.com> wrote:

> Hi astropyers,
> I have a ready made spectral line atlas. Is there a direct way to mark the
> spectral lines in one spectrum plot?
> I have found  a module called lineid_plot. However,I can not install it.
>
> The images below are three examples.
>  http://www.cv.nrao.edu/course/astr534/images/bandscan.gif
>
> http://skyserver.sdss3.org/dr8/en/tools/quicklook/quickobj.asp?id=1237662661600608302
>  http://inspirehep.net/record/878108/files/plot_mean_spec1.png
>
> Thank you.
>
> hang
>
> _______________________________________________
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> AstroPy at scipy.org
> http://mail.scipy.org/mailman/listinfo/astropy
>
>


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