Unit of angle or arc measure, equal to 60 minutes (60')
Why is SW using degrees? or what is this 0.99°?
Is there something I haven't noticed?
ASME Y14.5-2009 1.5.5 doesn't stipulate either form as the preferred choice.
Perhaps elsewhere, one form is dictated as an ANSI standard.
Or perhaps in another standard, one form is preferred. This, I don't know.
Hi ömür tokman,
Actually when I add .10deg to 35.99deg it produces 36.09deg.
I guess SW uses decimal notation to display degree to simplify things. Instead of saying 38° 53′ 23″ we can just say 38.8897deg.
0.99deg(in decimal ) = (99/100)x60' = 59'24''
You actually have the units set to show a decimal degree rather that degree min sec. If you want it to show deg min sec change the unit of the part to show it that way.
I knew that, thank you for the reminder anyway.
As far as I understand, this is not a standard, but a situation specific to SW.
If there is a different answer, I'll wait a while to learn.
SW has decimal system....not Degrees, Minutes, Seconds
35.99° = 35° 59' 24"
Perhaps it is a rounding error from the 0.99, perhaps a conversion error?
James Riddell wrote: 35.99° = 35° 59' 24"Perhaps it is a rounding error from the 0.99, perhaps a conversion error?
James Riddell wrote:
This demonstrates the inherent "danger" in toggling between the two systems:
1 minute = 0.0167°
1 second = 0.0003°
The precision of the data for both forms should be identical, else you'll imply or instill errors.
I'm converting the minutes given to me in decimal.(99°/60' = 1.65°).
Is this wrong?
ömür tokman wrote: I'm converting the minutes given to me in decimal.(99°/60' = 1.65°).Is this wrong?
ömür tokman wrote:
Is there a typographical error here?
You're mixing units. A minute (') is 1/60 of a degree (°). So 60' = 1°.
99° / 60' is the same as 99° / (60'/60'/°) = 99° / 1° = 99°
I explained it wrong.
Sample: 10°,30'=10,495° (0,0165°*30'=0,495)
ömür tokman wrote: I explained it wrong.Sample: 10°,30'=10,495° (0,0165°*30'=0,455)Is this wrong?
Sample: 10°,30'=10,495° (0,0165°*30'=0,455)
I find it easier to convert the minutes by dividing them by 60 to get degrees.
And to convert the seconds, divide the seconds by 3600 to get degrees.
So 10° + 30'/60 = 10.5°
Since these are "nice" numbers, you aren't starting the calculations with a truncated factor.
But why your result is 10.495° is perhaps due to rounding if you're using multiplication as shown above.
0.0165 is not accurate for 1/60 = 0.1667 at four decimal places. (It's 0.0166666666666666666666666666666...to infinity and beyond!)
Edit: Although mathematically true, to compute the seconds, I usually multiply the fractional remainder of the minutes division by 60.
10°30' is 10.5° on decimal
1° = 60'
Pre-Calculus - Converting between decimals and degrees minutes and seconds - YouTube
ömür tokman wrote: I explained it wrong.Sample: 10°,30'=10,495° (0,0165°*30'=0,495)Is this wrong?
Sample: 10°,30'=10,495° (0,0165°*30'=0,495)
10° 30' = 10.5° exactly
I don't understand your conversion process.
10.495° = 10° 29' 42" exactly
If you ever took up Geocaching or Waymarking then you would quickly discover correct conversion between decimal degree and degree/minute/second. Otherwise you might be lost in the woods.
EDIT: If you were off by 1/2 of a second at the equator you would be ~50 feet away.
I don't know WTF you guys are complaining about. Like John said, just set your units under Document Properties to be whatever you want:
Both are equally valid, as long as you have a clue. If you can't tell which units are being used, just investigate the number and the unit designations.
36.084° - This number is displayed in decimal degrees.
36°29'3" - This number is displayed in deg/min/sec.
If you want decimal degrees, choose decimal degrees. If you want deg/min/sec, choose that. Or choose radians if you're a weirdo.
Yeah. As a toolmaker, I would like the decimal value, so that I don't make a conversion error.
As a land surveyor, I'd use degree, minutes and seconds.
It all depends on what the standard is for what you're doing in your field.
I made this awhile ago. It's pretty simple converting excel sheet. But it works for what I need. Hope this helps.
Edit: This is a tool only. I have double checked the formulas and it gives me the correct values, But this is to used as a reference tool only.
thanks a lot,
This will be useful.
and to add to what Josh Brady showed, if you wanted multiple dimension styles on the same drawing, you can use the override units.
Scott Paeth wrote: and to add to what Josh Brady showed, if you wanted multiple dimension styles on the same drawing, you can use the override units.
Scott Paeth wrote:
Remember: Unless explicitly specified in the dimension itself, for all angular units (and linear units, too), be sure to specify the default tolerances for each type and for each level of precision.
I thank everyone who answered.
There are a few correct answers, but only one can be selected. (for me)
I apologize for other correct answers.
I'm reminded that I once cooked up a little conversion spreadsheet for the guys in our tool and die shop. At the time, they were allowed to have a computer, but not outside internet. Maybe it will come in handy for you too.
Also, I recall reading that SW (and, I think, Excel) actually uses radians for all the calculations "behind the scenes" regardless of the format you use to enter or show angle dimensions. The math guys can explain why radians are superior to degrees.
Thanks a lot Erik,
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