
Hello my name is Daniel, I have been working with yt for a couple months and it has been really useful. I have found the ray method very useful but I have been wondering if there was a possibility to be able to print out a ray like an array. What I mean is if there is a way to use a ray to grab information along that ray and be able to iterate through it like an array to be able to print it out into a file or just print in general. If this is not possible is there any other method I should use to be able to get a line of information between two points and be able to print it out somewhere? Also if possible I would also like it to be able to annotate it on a graph like a ray so I can see where exactly I'm grabbing but if not that is fine. Thank you, Daniel

Hi Daniel, You can use the ray object like other geometric data containers in yt to query fields for all the cells/particles intersected by the ray. For example, ray = ds.ray(...) print (ray("gas", "density")) print (ray("index", "x")) # x position You can also use the annotate_ray <https://yt-project.org/docs/dev/visualizing/callbacks.html#annotate_ray> function to overplot your ray onto projects, slices, etc. Britton On Fri, Jun 7, 2024 at 8:42 PM Daniel <danruval0@gmail.com> wrote:
Hello my name is Daniel, I have been working with yt for a couple months and it has been really useful. I have found the ray method very useful but I have been wondering if there was a possibility to be able to print out a ray like an array. What I mean is if there is a way to use a ray to grab information along that ray and be able to iterate through it like an array to be able to print it out into a file or just print in general. If this is not possible is there any other method I should use to be able to get a line of information between two points and be able to print it out somewhere? Also if possible I would also like it to be able to annotate it on a graph like a ray so I can see where exactly I'm grabbing but if not that is fine.
Thank you, Daniel _______________________________________________ yt-users mailing list -- yt-users@python.org To unsubscribe send an email to yt-users-leave@python.org https://mail.python.org/mailman3/lists/yt-users.python.org/ Member address: brittonsmith@gmail.com

how does the print(ray("index", "x")) work more specifically. I keep trying to call it but it keeps giving me a 'YTRay' object is not callable when I do print(ray("index", i)) or print(ray(i, i))

I think you need to index the ray, using `[]` not `()`, which python sees as a call instead. So try: print(ray[("index", "x")]) or print(ray["x"]) On Mon, Jun 10, 2024 at 4:09 PM Daniel <danruval0@gmail.com> wrote:
how does the print(ray("index", "x")) work more specifically. I keep trying to call it but it keeps giving me a 'YTRay' object is not callable when I do print(ray("index", i)) or print(ray(i, i)) _______________________________________________ yt-users mailing list -- yt-users@python.org To unsubscribe send an email to yt-users-leave@python.org https://mail.python.org/mailman3/lists/yt-users.python.org/ Member address: michael.zingale@stonybrook.edu
-- Michael Zingale Professor of Physics and Astronomy Dept. of Physics & Astronomy • Stony Brook University • Stony Brook, NY 11794-3800 *phone*: 631-632-8225 *e-mail*: michael.zingale@stonybrook.edu *web*: https://zingale.github.io github: https://github.com/zingale <http://github.com/zingale>

Oh yeah, sorry about that. I wasn't paying close enough attention when I responded. Britton On Tue, Jun 11, 2024 at 1:24 AM Michael Zingale via yt-users < yt-users@python.org> wrote:
I think you need to index the ray, using `[]` not `()`, which python sees as a call instead.
So try:
print(ray[("index", "x")])
or
print(ray["x"])
On Mon, Jun 10, 2024 at 4:09 PM Daniel <danruval0@gmail.com> wrote:
how does the print(ray("index", "x")) work more specifically. I keep trying to call it but it keeps giving me a 'YTRay' object is not callable when I do print(ray("index", i)) or print(ray(i, i)) _______________________________________________ yt-users mailing list -- yt-users@python.org To unsubscribe send an email to yt-users-leave@python.org https://mail.python.org/mailman3/lists/yt-users.python.org/ Member address: michael.zingale@stonybrook.edu
-- Michael Zingale Professor of Physics and Astronomy
Dept. of Physics & Astronomy • Stony Brook University • Stony Brook, NY 11794-3800 *phone*: 631-632-8225 *e-mail*: michael.zingale@stonybrook.edu *web*: https://zingale.github.io github: https://github.com/zingale <http://github.com/zingale>
_______________________________________________ yt-users mailing list -- yt-users@python.org To unsubscribe send an email to yt-users-leave@python.org https://mail.python.org/mailman3/lists/yt-users.python.org/ Member address: brittonsmith@gmail.com
participants (3)
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Britton Smith
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Daniel
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Michael Zingale