I am looking for a single symbol/letter to represent a data source in text of an HTML page (or Markdown).
I would like to use the cylinder shape has usual for a database.
Maybe I am not searching for the right word, but I am not figuring out any Unicode for a cylinder or something similar.
Is there a Unicode Character for a cylinder?
Thereβs U+26C1 WHITE DRAUGHTS KING β and U+26C3 BLACK DRAUGHTS KING β, which are similar visually if not semantically.
I tend to (mis)use π’ (Oil drum) \x1F6E2, since I have more databases than oil drums. (See Unicode.org )
There's a file cabinet U+1F5C4. π
And a card file box and card file index. ππ
You can also use a square shape to represent a database (looks like a server farm):
β€ Square with Horizontal Fill (U+25A4)
βΈ Apl Functional Symbol Quad Equal (U+2338)
Related
In a unicode string, each grapheme consists of one or more code points. However, there are some code points, such as the Zero-width joiner (ZWJ), which are never a part of a grapheme. The ZWJ is, in itself, invisible. Are all of those "non-grapheme" code points always invisible?
The Unicode representation of the Ogham script is notable for containing a non-invisible whitespace character. (U+1680: OGHAM SPACE MARK)
Tom Scott made an excellent YouTube video on the subject: link
There are many joining characters which are intended to modify a base character. Whether they provide a grapheme on their own is partially an implementation detail, I expect.
Example: o followed by U+0308 COMBINING DIAERESIS produces ΓΆ (the glyph in isolation is rendered by your browser as Μ)
List of all code points in this category: https://codepoints.net/search?lb=CM
Recent Unicode versions also have invisible characters which modify how a previous emoji is being rendered, famously to add e.g. a skin color trait to emojis with human figures or faces. These by definition are not graphemes in their own right, though again, rendering engines are probably free to figure out a way to represent them if they are encountered in isolation.
Example: π U+1F44B WAVING HAND SIGN followed by U+1F3FB EMOJI MODIFIER FITZPATRICK TYPE-1-2 (which in isolation renders as π») produces ππ»
Full catalog: https://www.unicode.org/emoji/charts/full-emoji-modifiers.html
I want to use the β character with two // strokes through the arrow but cannot find the unicode value for it anywhere. Does this exist in unicode? If not, is there a way to recreate it?
There are six Unicode characters whose name matches a right arrow with a double stroke, making use of the regular expression: /right.*arrow.*double.*stroke/.
Only two characters appear to be relevant candidates:
β» U+21FB RIGHTWARDS ARROW WITH DOUBLE VERTICAL STROKE
βΌ U+2B7C RIGHTWARDS TRIANGLE-HEADED ARROW WITH DOUBLE HORIZONTAL STROKE
(*Β RIGHTWARDS TRIANGLE-HEADED ARROW WITH DOUBLE VERTICAL STROKE)
Notes:
The official Unicode name of U+2B7C was initially wrong, but a corrected name has been added later as an alias.
U+2B7C appears to be quite uncommon, no suitable font was available in the OS used for the screenshot. Still, it is possible to see what it should look like in the Miscellaneous Symbols and Arrows - Range: 2B00β2BFF PDF document:
I was not successful in finding what you were looking for (negative result). U+0219B is a "Rightwards Arrow with Stroke" and U+021FB "Rightwards Arrow with Double Vertical Stroke". If it exist, it would probably be called "Rightwards Arrow with Double Stroke". https://en.wikipedia.org/wiki/Arrow_(symbol)
The following Unicode sequences should describe your character, but unfortunately fonts are not helping.
ββ« : \u2192\u20EB
βΆβ« : \u27F6\u20EB
They are normal and long arrow, with the combining U+20EB: COMBINING LONG DOUBLE SOLIDUS OVERLAY (long double slash overlay). You may find a technical font which can display both in the expected way.
You may get something acceptable also with:
β―β―β―β«βΆ \u23AF\u23AF\u23AF\u20EB\u27F6 (using arrow extension line)
β―β―β«βΆ \u23AF\u23AF\u20EB\u27F6
Depending on the environment, one of the two seem much better (on my computers).
So: you can express it (semantically) with Unicode, but standards fonts are not helping us. You should experiment with many symbols/mathematical fonts, to get an acceptable solution.
As alternative, you can build such image easily with SVG (and use a SVG as character image).
Playing with Unicode to create symbols with the already large set of combiners and other modifiers allows to already go far.
Although, there are times where some arrows are only given in a single direction, or a diacritic is available only placed above, but not for example bellow on the left side.
So are they modifiers/combiners that allow to instruct such a composition?
For example, the combining rectangle allows to make something like aΜ». At least on the current terminal, it's rendered with a rectangle on the above right position compared to the a glyph to which it's combined, having it's longest side oriented horizontally. Now, what if :
the goal is to place the rectangle at the top left, top middle, etc.?
the goal is to rotate the rectangle before it's combined with the main glyph?
the goal is to mirror the rectangle before it's combined with the main glyph?
Obviously the last point don't make much difference for a rectangle, but for asymmetric glyphs it would.
No, there is no such mechanism in Unicode. Different positional variants of the same diacritic are encoded as separate characters. For example, U+0307 COMBINING DOT ABOVE, U+0358 COMBINING DOT ABOVE RIGHT, and U+1DF8 COMBINING DOT ABOVE LEFT are all different codepoints. There is currently no way to represent, say, a generic combining dot below right in Unicode.
Similarly, arbitrary Unicode characters cannot be mirrored or rotated. Where such transformations make a meaningful distinction (for example the pair βEβ and βΖβ), they have once again been encoded atomicly.
There are some very specific circumstances where such modifiers can be applied. In Sutton SignWriting, rotation is a productive feature. Rotating glyphs is necessary to display text correctly, so a number of rotation modifiers have been defined. For example, U+1D800 SIGNWRITING HAND-FIST INDEX points upwards in its base orientation (π ), but by appending U+1DAA1 SIGNWRITING ROTATION MODIFIER-2 you can make it point north-west instead (π πͺ‘).
For emoji only, Unicode also specifies a mechanism for defining whether a given glyph is supposed to face left or right. For example, βπββ¬
οΈβ would be an automobile going to the left and βπββ‘οΈβ would be an automobile going to the right. No commercially available fonts presently support this mechanism, however.
I have a series of questions about writing code for iOS and including handwritten recognition of japanese. I am a beginner, so be gentle and assume I am stupid ...
I'd like to present a japanese word in hiragana (japanese phonetic alphabet), then have the user handwrite the appropriate kanji (chinese character). Then, this is internally compared to the correct character. Then, user gets feedback (if they were correct or not).
My questions here revolve around the handwritten input.
I know normally if one uses the chinese keyboard this type of input is possible.
How can I institute something similar, without using the keyboard itself? Are there already library functions for this (I feel there must be since that input is available on the chinese keyboard)?
Also, Kanji aren't exactly the same as chinese characters. There are unique characters that japanese people invented themselves. How would I be able to include these in my handwriting recognition?
We worked on a similar exercise back at University.
As the order of the strokes is well defined with kanji and there are only 8 (?) different strokes. Basically each Kanji is a well-ordered sequence of strokes. Like te (hand) is the sequence "The short falling backward stroke" and then twice the "left to right stroke" and finally "The long downward stroke with the little tip at the bottom". There are databases that give you this information.
Now the problem is almost reduced to identify the correct stroke. You will still run into some ambiguities where you have to take into consideration in which spatial relation some strokes are to some others.
EDIT: For stroke recognition we snapped the free hand writing to 45 degrees (Where is the little circle symbol on the keyboard?) angles, thus converting it into a sequence of vectors along one of these directions. Let's assume that direction zero is from bottom to top, direction 1 bottom right to top left, 2 from right to left and so on CCW.
Then the first stroke of te (ζ) would be [23]+ (as some write it falling and some horizontal)
The second and third stroke would be 6+
and the last would be 4+[123] (as with the little tip, every writer uses a different direction)
This coarse snapping was actually enough for us to recognize kanjis. Maybe there are more sofisticated ways, but this simple solution managed to recognize about 90% of kanjis. It couldn't grasp only the handwriting of one professor, but the problem was that also no human except himself could read his handwriting.
EDIT2: It is important that your user "prints" the Kanji and doesn't write in calligraphy, since in calligraphy many strokes are merged into one. Like when writing a kanji with the radical of "rice field" in calligraphy, this radical morphs into something completely different. Or radicals with a lot of horizontal dashes (like the radical of "speech" iu) just become one long wriggly line.
I'm looking for a font which contains a graphic character which is (essentially), the space character, inverted. I'm looking for a graphic character equivalent to the largest-possible solid-black box. The closest I have been able to find is Wingings 2 character 162, but that doesn't fill the entire available character space. When I insert two consecutive Wingdings 2 162 characters, there is still appreciable whitespace between them when displayed or printed. Does anyone know of a black-box font/character which would fill all available character space?
All characters are going to have whitespace between them, or they would be unreadable. This is called "kerning". You can adjust the kerning and line-height in whatever program you are using to send the malicious fax, if you want to be sure to use the maximum amount of toner per page.
Have you considered creating your own font using a software package like this or like this? You could edit the space character to be a solid black square. But as Chris McCall mentioned, you may still have space between characters of any size due to kerning applied by the layout engine that draws the fonts.
You other option is to owner draw your own text and programmatically replacing spaces with black boxes. You would have complete control over kerning and everything else.
I don't know if this is exactly what you were looking for, but...
I was looking for the same thing, since I wanted to create a "textbox" when I wanted to write text using the spritefont, but I never knew how long the total string was going to be, so I wanted something that I could "write" in the same location right before the string with a contrasting color which could be expected to be as long as the string it needed to encompass. That being the case, try:
Webdings - character 103.
I tried lining them up and there wasn't even any space in between. Perfect.