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MaplePrimes Activity

These are Posts that have been published by Christopher2222

Deleted posts should go into a seperate container on mapleprimes for review by the original poster.

In the past some have been deleted by accident and others for good reasons and others just because. 

The idea to put it into a container is so accidental deletes can be recovered and not lost.  A legitimate delete of a post is if it provides no value to the original question.

Mapleprimes advanced search isn't working properly

I wanted to find only my (Author: Christopher2222) related to (keyword: plot) and the search found posts and plots where I wasn't even involved! 

Mapleprimes - please fix

Here's a few commands you can use within Maple to collect information about your computer.  This is on a Windows 7 machine but should work for most Win7+ systems.  Not sure how far back the WMIC commands can be used, and it won't work on Mac or Linux. 


`Maple 2022.0, X86 64 WINDOWS, Mar 8 2022, Build ID 1599809`



`Standard Worksheet Interface, Maple 2022.0, Windows 7, March 8 2022 Build ID 1599809`


ssystem("WMIC CPU Get Name, NumberOfCores, NumberOfLogicalProcessors")[2]

"Name                                             NumberOfCores  NumberOfLogicalProcessors  

Intel(R) Core(TM)2 Duo CPU     P8700  @ 2.53GHz  2              2                          



ssystem("WMIC computersystem get totalphysicalmemory")[2]





ssystem("WMIC memorychip get devicelocator, capacity, speed")[2]

"Capacity    DeviceLocator  Speed  

4294967296  DIMM 0         800    

4294967296  DIMM 1         800    





This post is in response to a question regarding the speed of Maple 2023 on different computers. 

I'm asking users to suggest a few benchmark problems for Maple to calculate for testing.  Basic system information (Processor speed, RAM, video card etc..) perform the calculation, get the timing and then we can collect all the information into a chart where we can update it in the original post of this thread. 

All input is welcome, it doesn't have to be confined to Maple 2023.  We can expand to as many older versions as we wish. 

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. 

restart; gc()


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.



`45° 14' 11.4000"`


dms(45, 14, 11.4)





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.

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