Comments for rweber.net

Comment on Finding Cousins: A deep dive into a narrow slice of XPath by Alan

Alan — Thu, 05 Dec 2019 18:30:10 +0000

This was a huge help! Yesterday, I was talking to a coworker about needing to find a parent’s sibling’s child element, and I said, “You know, a cousin.” While I was still struggling with that I did a search for “xpath cousin” and this came up and helped to save the day for me. Thank you!

Comment on Conquering scrollbars by Montgomery Webster

Montgomery Webster — Mon, 24 Dec 2018 15:31:05 +0000

In reply to Rebecca. Thanks, very generous!

Comment on Conquering scrollbars by Rebecca

Rebecca — Sun, 09 Dec 2018 12:49:02 +0000

In reply to Montgomery Webster. Aw shoot, mixed content. I wonder how many other posts have broken pastebin embeds in them? Thanks for pointing it out and sorry it took me so long to get back to you!

Comment on Conquering scrollbars by Montgomery Webster

Montgomery Webster — Mon, 29 Oct 2018 08:49:45 +0000

Looks like the media files have gone missing, Rebecca. When you have some time, would you please upload the pictures again? Would make the tutorial a lot more readable. Thank you.

Comment on Bullet-proof lists by Rebecca

Rebecca — Fri, 04 Apr 2014 00:57:45 +0000

In reply to magda. *curtsey*

Comment on Bullet-proof lists by magda

magda — Thu, 03 Apr 2014 20:16:39 +0000

Your title was delightfully misleading.

Comment on Distinguishing related rates and optimization by Rebecca

Rebecca — Sat, 05 Oct 2013 13:44:17 +0000

In reply to martin shenven.

Thanks for your comment and apologies for the lateness of my reply – I’ve been neglecting this blog. I’m afraid I don’t have any recommendations for you on either count, although my understanding of homogeneous coordinates is that the justification is more engineering than mathematics: they make the implementation computationally simpler because every movement is multiplication (and not only that, multiplication by a matrix with a large number of zeroes). Best of luck!

Comment on Distinguishing related rates and optimization by martin shenven

martin shenven — Fri, 06 Sep 2013 16:16:29 +0000

R. Weber,
I am a retired EE ,77 yrs old, that has become interested in matrices, and
through these studies have encountered Computer Graphics using matrices.

QUESTIONS:
1. Can you suggest an inexpensive textbook that introduces Computer Graphics

2. Which free Internet net site might I use to learn Computer Graphics?
I especially want to learn about the mathematical justification for using homogeneous coordinates

Thank you,