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Author Topic: Alt codes for Maths Symbols  (Read 613 times)

tomos

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Alt codes for Maths Symbols
« on: September 29, 2017, 05:04 AM »
I found a helpful page showing Alt codes for Mathematical symbols
http://usefulshortcu.../maths-alt-codes.php
(I've confirmed the numbers given correct at other sites)

Some of them work for me, but some dont e.g. I get the wrong symbol with Alt247.
I get a ¸
I'm wondering is this to do with the font -- would I need a special font for some symbols?
Or could it be to do with using a qwertz (German) keyboard?

I'm specifically looking for the 'equivalent' symbols:

Screenshot - 2017-09-29 , 11_48_35.png [Alt 247]

Screenshot - 2017-09-29 , 11_48_46.png (Couldnt find an Alt code for this one! It seems to be not that common, or not commonly used for maths)

Copying and pasting of symbols (from wikipedia) does not work either e.g. with first example I get a ~

Anyone got any ideas here?

Ath

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Re: Alt codes for Maths Symbols
« Reply #1 on: September 29, 2017, 05:12 AM »
The special character has to be available in the font you are using. Not all fonts have the entire unicode character set.

x16wda

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Re: Alt codes for Maths Symbols
« Reply #2 on: September 29, 2017, 05:31 AM »
Run charmap.exe, load up Arial Unicode MS, and scroll down to find what you need. It reports that to get the Asymptotically Equal To symbol you would press U+2243.

I am still trying to figure out how to find the U key (as opposed to Alt), several sources say use the Alt but it hasn't worked for me yet.  :(

That said, from charmap you can always copy and paste:  ≃

Screenshot - 9_29_2017 , 6_32_36 AM.pngAlt codes for Maths Symbols

tomos

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Re: Alt codes for Maths Symbols
« Reply #3 on: September 29, 2017, 05:53 AM »
from charmap you can always copy and paste:  ≃
yes, of course, thanks :up:

Run charmap.exe, . . . It reports that to get the Asymptotically Equal To symbol you would press U+2243.

I am still trying to figure out how to find the U key (as opposed to Alt), several sources say use the Alt but it hasn't worked for me yet.  :(

likewise, I saw the U codes elsewhere but couldnt figure them out either

tomos

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Re: Alt codes for Maths Symbols
« Reply #4 on: September 29, 2017, 06:13 AM »
The special character has to be available in the font you are using. Not all fonts have the entire unicode character set.
something weird going on:
I can find the character in charmap (Arial), copy paste it, and convert it to most other fonts --
but the Alt247 gives me something else :-/

Screenshot - 2017-09-29 , 12_57_21_ver001.png

but at least I'm sorted with charmap

Stoic Joker

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Re: Alt codes for Maths Symbols
« Reply #5 on: September 29, 2017, 06:47 AM »
Don't know if it matters/helps, but (in Word) Alt 247 with Calibri gives me the equivalent symbol here. Notepad with (default) Consolas does as well.

Region/Language/KB layout all set to US.

tomos

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Re: Alt codes for Maths Symbols
« Reply #6 on: September 29, 2017, 07:17 AM »
Don't know if it matters/helps, but (in Word) Alt 247 with Calibri gives me the equivalent symbol here. Notepad with (default) Consolas does as well.

Region/Language/KB layout all set to US.

do you mean the correct symbol as shown in OP i.e. ≈
?

I will have a look at language, and keyboard layout

Curt

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tomos

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Re: Alt codes for Maths Symbols
« Reply #8 on: September 29, 2017, 09:40 AM »
Curt! you're looking different :D

Quote from: fileformat.info
How to enter Unicode characters in Microsoft Windows

also, https://ufonts.com/download/arial-unicode-ms/197925.html

Curt, you presumably have a european keyboard:
could you try Alt247 (247 from the numberpad) in your word processor & let me know what you get?
Thanks


From your link there I'm using this method - it works for some characters, for others I get unexpected results -- it's not currently important to me why, but I would still like to know why :-[
Quote
Method 3: Code-page Specific

    This method depends on the specific code page you have installed.

        Press and hold down the Alt key.
        Type the decimal codepage value on the numeric keypad. Do not type any leading zeros.
        Release the Alt key.

    You can see which code page you have by typing chcp at a command prompt. Check the grid for your code page from the list of known code pages to see what characters you can enter this way.

    The entries in the Unicode character information section are using code page 437.
I checked the code page & see it is using Code page 850w
Quote
850 is the primary code page and default OEM code page in ... e.g. in the United Kingdom, Ireland, and Canada), whilst other English-speaking locales (like the United States) default to use the hardware code page 437.[4]

Systems largely replaced code page 850 with, first, Windows-1252 (often mislabeled as ISO-8859-1), and later with UCS-2, and finally with UTF-16.[nb 1]

Code page 850 differs from code page 437 in that many of the box drawing characters, Greek letters, and various symbols were replaced with additional Latin letters with diacritics, thus greatly improving support for Western European languages (all characters from ISO 8859-1 are included). At the same time, the changes frequently caused display glitches with programs that made use of the box-drawing characters to display a GUI-like surface in text mode.

In 1998, code page 858 was derived from this code page by changing code point 213 (D5hex) from a dotless i ‹i› to the euro sign ‹€›.[5] Despite this, IBM's PC DOS 2000, released in 1998, changed their definition of code page 850 to what they called modified code page 850 now including the euro sign at code point 213 instead of adding support for the new code page 858.[nb 2][6][7][8]

Stoic Joker

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Re: Alt codes for Maths Symbols
« Reply #9 on: September 29, 2017, 11:19 AM »
Don't know if it matters/helps, but (in Word) Alt 247 with Calibri gives me the equivalent symbol here. Notepad with (default) Consolas does as well.

Region/Language/KB layout all set to US.

do you mean the correct symbol as shown in OP i.e. ≈
?

I will have a look at language, and keyboard layout

Yes.