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Evolution of Stars: Hertzsprung-Russell diagram

POSTED BY: Marco Thiel
4 Replies
Posted 8 years ago

Hi Marco,

Thanks for your thoughts. I fixed the typo and got your code to run on 1000 stars... very nice. Thanks for a thought-provoking article!

Regards, -Joe

POSTED BY: Joe Gilray

Dear Joe,

I am sorry to hear that you are having trouble downloading the data. I have just run the code again (on MMA 11.1.1) and do not have any indication that anything is going wrong. I do not get an error when I run the code. (There was however, one typo, I just noticed. It was \Transpose in one line instead of //Transpose; fixed now.)

enter image description here

And you are right that downloading can take some time, but it is far below 6 hours for me. I think that it depends a bit on where you are and which server is used to provide the data to you. You are in Oregon (?), and I am not sure which server Wolfram use for you. I am in Scotland and I have to wait a little bit, but after 13 minutes I am done downloading. Here is a screenshot of the results:

enter image description here

I am not sure how to help with the server issue. Have you tried using a proxy-server to another location? The amount of data transferred is rather low.

starData // ByteCount

is just under 10 MB. So, if you get a better server, that might help. Another thing is that there might be a bit of load balancing going on. I am about to post another thing where I use a lot of data from Wolfram servers - not 10000 but rather 100000s of data points. I have noticed that downloading them in smaller batches helps (and probably eats up more points for API requests).

Best wishes,

Marco

POSTED BY: Marco Thiel
Posted 8 years ago
POSTED BY: Joe Gilray

enter image description here - another post of yours has been selected for the Staff Picks group, congratulations !

We are happy to see you at the tops of the "Featured Contributor" board. Thank you for your wonderful contributions, and please keep them coming!

POSTED BY: EDITORIAL BOARD
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