subscript | 易学教程

R - Interpreting a subscript in a variable used in ggplot

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问题 I'm using ggplot to do some multiline plots that are constructed with lots of variables and the use of paste. I have not been able to figure out how to get the subscript 3 in O3 to appear in the following simplified version of the code. gasSubscript <- "O[3]" color1 <- paste(gasSubscript,"some additional text") df <- data.frame(x = c(1,2,3,4,5,6,7,8,9,10), y = c(10,9,8,7,6,5,4,3,2,1)) testPlot <- ggplot(data = df, aes(x = x)) + geom_line(aes(y = y, color = color1)) color1 contains "O[3] some

C# Create a subscript in a string

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问题 Currently I am trying to fix some formatting in my application. I am trying to subscript a string and append it to a normal string - the same way you can do it in MS word. I already tried this (as supposed here and here): string temp = "NormalText"; foreach( char t in "SubscriptedText".ToCharArray()) temp += "\x208" + t; MessageBox.Show(temp); Output: NormalTextȈSȈuȈbȈsȈcȈrȈiȈpȈtȈeȈdȈTȈeȈxȈt But, as I noted afterwards it is the font who has to support the unicode definitions. And on the

Objective-C中通过下标的方式访问自定义数据模型中属性

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Objective-C中通过下标的方式访问自定义数据模型中属性在Objective-C中，可以通过下标来访问数组中的元素，如果数组是NSMutableArray类型的可变数组，则还可以通过下标来对数组中的元素进行赋值操作。例如： NSMutableArray * array = [[NSMutableArray alloc]init]; array[0] = @"one"; NSString * str = array[0]; NSLog(@"%@",str); 对于Objective-C中的字典对象，可以通过键值下标的方式来进行访问，例如： NSMutableDictionary * dic = [[NSMutableDictionary alloc]init]; dic[@"name"] = @"name"; NSLog(@"%@",dic[@"name"]); 对于开发者自定义的的数据结构，一般会采用getter与setter方法来对其属性进行访问，虽然官方文档上没有提及，实际上，可以通过实现一些方法，来使自定义的数据模型支持使用下标来进行访问。创建一个数据模型类，使其继承自NSObject，如下： MyModel.h @interface MyModel : NSObject @end MyModel.m @implementation MyModel {

same subscript code, when building it with two Separate lines it's working fine, when building it with one line of code, im getting an error , why?

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问题 I've add two pictures of my code , that explain both Scenarios at the first scenario the subscript work exactly like its supposed to work, with Two lines of code at the secound scenario , the code should evaluate same as the two line, but im getting an error for some reason can you help me figure out WHY? working image :working image error image : error image full code: class SomeClass { var dic = Dictionary<String,(()->String) -> String>() subscript(_ s:String) -> (()->String) -> String {

Subscript out of range error - VBA error

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问题 I keep getting subscript out of range for the following code, I'm new to VBA so would greatly appreciate your help. I'm trying to reference a table that contains various source workbooks and copy the data from here to "target" workbooks also contained in the sTable range. Thanks, Ronan Sub Import() Dim sTable As String ' Source table Dim sTarget As String ' Target range for output Dim sHeader As String ' Header row from the input data Dim sFileName As String ' File name to read from Dim

jQuery execCommand for superscript and subscript not properly toggling

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问题 I'm trying to create a text editor using jQuery and execCommand . Everything was going good until I noticed that both superscript and subscript aren't properly toggling. This jsFiddle (http://jsfiddle.net/k8F4P/) should illustrate the problem. It is possible that it is simply my browser, but I'm using the latest version of Chrome for Mac. 回答1: Turned out the issue was that the stylesheet normalize.css was setting the sub and sup tags' vertical-align to baseline and this was preventing the

Which normal fonts support Unicode subscript characters?

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问题 I have a need to use the Unicode character 0x2091, a subscript e, rather than using markup for formatting the subscript. However, the usual-suspect fonts don't appear to include a glyph for this Unicode position. Are there any Windows- or Office-included fonts that include this character? 回答1: Check out this website. 回答2: Just run charmap.exe . Looks like Arial , Courier New and Times New Roman have it. 回答3: I'd expect Arial Unicode MS to include such glyph. 来源： https://stackoverflow.com

Is it possible to add “keyed-subscripting” to Class objects?

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问题 In the vein of... @implementation MyClass - (id) objectForKeyedSubscript:(id)k { return [self something:k]; } Is it also possible to "subscript" Class objects? I too, am about to find out, with you.. but thought I would post this question as I tested it out, myself... + (id) objectForKeyedSubscript:(id)k { return [self.shared something:k]; } And alas.. it is not... id x = MyClass[@"document"]; error: unexpected interface name 'MyClass': expected expression But why, Daddy? Class ' sure get the

How to print subscripts/superscripts on a CLI?

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问题 I'm writing a piece of code which deals with math variables and indices, and I'd need to print subscripts and superscripts on a CLI, is there a (possibly cross-platform) way to do that? I'm working in vanilla C++. Note: I'd like this to be cross-platform, but since from the first answers this doesn't seem to be possible I'm working under MacOS and Ubuntu Linux (so bash). Thank you 回答1: Since most CLIs are really only terminals (pretty dumb ones mostly but sometimes with color), the only cross

How to add subscript characters in paragraphs using Word Automation?

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问题 I’m working on a program in C# that uses Microsoft Word 14.0 Object Library to create a .doc file, add paragraphs to it and saves it. There is a small form with a button that does described actions (see the code below). This part has no problems. Problem: Current text in created word file will be the following: Some text beff = 3.0 What I need to accomplish, is creating a paragraph, which has subscript characters inside.(in paragraph above letters "eff" should be subscripted): The final