Christopher2222

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DMS degrees minute seconds to decimal co...

Posted: Christopher2222 5800 Product: Maple

April 11 2023

1 2

It seems once in a while someone asks about converting from degrees minutes seconds format to decimal or the other way around.

I created a little procedure for just that purpose.

A little procedure to convert the form of degrees, minutes, seconds to decimal and vice versa.

$dms := proc (d, m := 0, s := 0) local con, d1, d2, d3; if 0 < frac(d) then d1 := floor(d); d2 := floor(60*frac(d)); d3 := 60*frac(60*frac(d)); con := cat(d1, `° `, d2, `' `, d3, `"`) else con := d+m/60.+s/3600. end if; print(con) end proc$

Examples of use.

(1)

(2)

Download dms.mw

edit - a quick realization is to remove the decimals that changes the fractions to floating decimals and change print(con) to print(evlaf(con)) to avoid rounding issues.

Maple flow minor improvement...

Posted: Christopher2222 5800 Product: Maple Flow 2022

March 31 2023

1 2

MapleFlow is showing the exact same icon in the taskbar as Maple when both are open. Be nice if they were slightly different.

FIX MAPLEPRIMES SEARCH...

Posted: Christopher2222 5800 Product: MaplePrimes

November 12 2022

5 1

There is something wrong with the search in mapleprimes.

I noted one users comment last week about using the search to find something being very difficult to find. The results don't often match the search. Only just this morning I was looking for something and the results were less than satisfying often pointing to a list of more results which didn't seem to help.

This has been a problem for a long time, is this going to be looked at or fixed soon?

New Maple application center search does...

Posted: Christopher2222 5800

October 16 2022

1 0

The search query in the new Maple Application center is broken. There is no advanced search options and a search for mapleflow or maple flow brings up 0 results. There should at least be one found, for example the search should have at least brought up The Liquid Volume in a Partially-Filled Horizontal Tank".

Maple, please fix.

Word Morph...

Posted: Christopher2222 5800 Product: Maple

June 06 2022

5 0

Here's a procedure using GraphTheory by morphing one four letter word into another by changing only one letter at a time. This is my initial working version. I've commented out the DrawGraph portion as it takes a long time (5 minutes or so) to produce. Using the Neighbors command from the GraphTheory package the graph can be shrunk to only include the relevant paths and will take a shorter time to draw. It's an initial version so there is room for improvements.

The word morph procedure for 4 letter words.

$morph := proc (w1::string, w2::string) local c, i, q, d, r, j, k, g, gg, sp; c := {seq(`if`(HammingDistance(w1, b[i]) = 1, b[i], NULL), i = 1 .. nops(b))}; q := {seq(`if`(HammingDistance(w2, b[i]) = 1, b[i], NULL), i = 1 .. nops(b))}; for i to nops(c) do c || i := {seq(`if`(HammingDistance(c[i], b[j]) = 1, b[j], NULL), j = 1 .. nops(b))} end do; for i to nops(q) do q || i := {seq(`if`(HammingDistance(q[i], b[j]) = 1, b[j], NULL), j = 1 .. nops(b))} end do; d := map(proc (x) options operator, arrow; {x, w1} end proc, c); r := map(proc (x) options operator, arrow; {x, w2} end proc, q); for i to nops(c) do d || i := map(proc (x) options operator, arrow; {c[i], x} end proc, c || i) end do; for i to nops(q) do r || i := map(proc (x) options operator, arrow; {q[i], x} end proc, q || i) end do; for k to nops(c) do for j to nops(c || k) do c || k || _ || j := {seq(`if`(HammingDistance(c || k[j], b[i]) = 1, b[i], NULL), i = 1 .. nops(b))} end do end do; for k to nops(q) do for j to nops(q || k) do q || k || _ || j := {seq(`if`(HammingDistance(q || k[j], b[i]) = 1, b[i], NULL), i = 1 .. nops(b))} end do end do; for i to nops(c) do for j to nops(c || i) do d || i || _ || j := map(proc (x) options operator, arrow; {c || i[j], x} end proc, c || i || _ || j) end do end do; for i to nops(q) do for j to nops(q || i) do r || i || _ || j := map(proc (x) options operator, arrow; {q || i[j], x} end proc, q || i || _ || j) end do end do; g := {d[], r[], seq(d || i[], i = 1 .. nops(c)), seq(r || k[], k = 1 .. nops(q)), seq(seq(d || j || _ || i[], i = 1 .. nops(c || j)), j = 1 .. nops(c)), seq(seq(r || j || _ || i[], i = 1 .. nops(q || j)), j = 1 .. nops(q))}; gg := GraphTheory:-Graph(g); sp := GraphTheory:-ShortestPath(gg, w1, w2); print(sp) end proc$
Today, June 6 is international yoyo day. So I start off with, of course, the word yoyo.