Boxes are the underlying representation of two-dimensional forms in notebooks.

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25
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2answers
1k views

How do I extract the contents of a selected cell as plain text?

My aim is to extract the contents of an Input cells as plain text. Ideally I would like to be able to select one or more Input cells and press a button which would then extract the text from these ...
18
votes
3answers
582 views

How can I get the unchanged Box form of an arbitrary expression?

One may observe that MakeBoxes does not give the actual Box form of various expressions: MakeBoxes[{1*^4, 000123, a*b c}] <...
18
votes
2answers
308 views

Understanding evaluation and typesetting

Background So, one could be surprised by the fact that: Hold @ Grid[{{1, 2}}] (*or*) Hold @ Graphics @ Disk[] This issue and methods of prevention are ...
16
votes
3answers
416 views

Notebook vs. DocumentNotebook; display a Notebook inline, like a DocumentNotebook

If you evaluate a DocumentNotebook[] expression in the front-end, it nicely displays inline, inside of an output cell in the current notebook: For my purposes, <...
16
votes
0answers
101 views

Inconsistent handling of Dynamic option values; intended, omission, or bug?

In answering Dynamic ClipPlanes calculated from current ViewPoint Kuba and I got into a brief exchange regarding how Option values wrapped in Dynamic should be ...
15
votes
2answers
203 views

How do I use the third and fourth arguments of Parenthesize?

Parenthesize seems to do a good job with constructing boxes that need to be appropriately parenthesized: ...
14
votes
2answers
445 views

Tokenize Mathematica input in a simple way

Background Usually, I give detailed descriptions when I have a question which sometimes lead to that users don't write their answers because they maybe think their answer is too simple. Therefore, I ...
13
votes
2answers
576 views

How to embed an image into a string?

Note: The bug described in the post is in Mathematica 9, and has been fixed in 10.0. The documentation for String contains the following statements: Strings ...
12
votes
1answer
528 views

How to convert a notebook cell to a string retaining all formatting, colorization of identifiers etc?

I have an opened Mathematica notebook containing several cells. Suppose, I am interested in one of them -- it may contain a complete or incomplete expression (e.g. with syntax errors, highlighted ...
11
votes
1answer
174 views

Functions returns Command Completion Output

Is there a function that returns the output as if you invoked Command Completion. To help clarify I am looking for a function that returns the Cell Data as if you invoked ...
10
votes
1answer
302 views

How to change the font color of a variable in whole input cell

I want to track the occurrence of a particular variable in a code. So the idea is to change its color. Usually I do it in a crude way - convert the code into text and then use ...
10
votes
2answers
267 views

Backslash commands in strings?

I discovered by playing around that Text[DisplayForm@SubscriptBox["\[Lambda]", "k"]] produces the same result as ...
9
votes
1answer
175 views

How to get a list of all expressions in a notebook matching a certain pattern?

Suppose I have a Mathematica notebook saved to a certain location on disk. Given a pattern I need to get the list of all expressions matching this pattern that appear in input, output or print cells ...
9
votes
1answer
188 views

Is there a way to have a Tooltip for non-editable raster graphics produced by MakeBoxes?

I have a function which produces a large object I would like to hide. Formatting is of course an option but I'm hoping for something a little more meaningful using raster graphics and ...
9
votes
1answer
212 views

Pasting TemplateBox with a Dynamic argument

Ok, this is pretty specific... The objective is to use a TemplateBox to format something that is programatically inserted with ...
9
votes
0answers
54 views

Issue with undo after copying a string inside a string

Bug introduced in 10.0 and persisting through 10.4.1 or later Here's a small but annoying issue related to undo and copying of strings. Steps required to get the problem: Type ...
8
votes
1answer
449 views

How to change brackets in TraditionalForm output

I'm trying to improve TraditionalForm's output by using different brackets when there are more than one. For instance, instead of $u(v(r(b))))$, I'd like to get $u\{...
8
votes
2answers
84 views

Reading Cells or Boxes expression by expression

Let's say we have a cell: (*newline*) (*newline*) Plot[ x, {x, 0, 1} ] (*newline*) Plot[x, {x, 0, 2}] How to read it expression by expression? ...
8
votes
1answer
85 views

On an existing notebook, how to transform all “double brackets” into “DoubleBracket”

Sometimes, having all double brackets [[...]] transformed into \\[LeftDoubleBracket] ... \\[RightDoubleBracket] can really ...
7
votes
3answers
173 views

How to avoid spaces between numbers when displaying TagBox(es)

The instruction : DisplayForm[RowBox[List[0,1,Superscript[2,3],Superscript[1,2],a]]] displays a gap between the first two items of the list but if one is ...
7
votes
1answer
124 views

ToExpression and ToBoxes aren't inverses of each other?

Applying ToExpression and ToBoxes repeatedly to Hold[1/1] gives many ...
7
votes
1answer
152 views

How to get string representation of boxes in v10.2?

In Mathematica versions up to 10.1 we could get string representation of given boxes by passing them to ToString with InputForm: ...
7
votes
2answers
269 views

Add semicolon at the end of code line programmatically

Suppose we have several lines of code in a cell: a b; Module[{}, c d] e How can we wrap them in a CompoundExpression i.e. ...
7
votes
1answer
103 views

How to convert arbitrary raw boxes directly into String?

This question is motivated by the recent question about searching inside of the NB files. According to the Documentation, ToString expects a high-level WL ...
7
votes
1answer
151 views

Converting string representation of boxes into explicit boxes [duplicate]

It is very easy and convenient to write textual labels as Strings in the WYSIWYG mode. For example, I define a short form describing a linear model: ...
7
votes
2answers
96 views

How to open and explore the codes of the system Palettes files

The built in Palettes of Mathematica are simply .nb files which can be found in the following place: ...
7
votes
1answer
111 views

Ways to obtain a BoxObject

Is there any way to get a BoxObject, except with EvaluationBox or ParentBox? So usually one ...
6
votes
2answers
993 views

Formatted text in a Dynamic or Manipulate control

I am using a Manipulate control to show different calculations for the same user-specified parameters. I would like to show the results for the calculation the ...
6
votes
2answers
199 views

How can you resize all the images in a notebook section?

I've pasted a large number of photos and they are too big which makes scrolling hard. Is there a way to automatically have Mathematica size them to 10% or something reasonable without have to click on ...
6
votes
1answer
284 views

On Reverting Code that Mma Switches to Raw Input Form Back to Standard Form

I experienced a similar issue to what is described in this post while editing formatted usage messages (that contained italics) in the declaration section of a package that I'm developing in the ...
6
votes
1answer
129 views

Why only up to two \[Prime] superscripts are interpreted as derivatives?

I noticed that only up to two \[Prime] superscripts are interpreted as derivatives. Is there a reason for this restriction? Is it documented? ...
6
votes
2answers
162 views

Prevent front-end from reformatting long fractions while editing

I am editing an expression containing wide fractions (typeset with fraction boxes): But if, while editing the equation, the fraction exceeds some threshold (seems to be approximately the window ...
6
votes
1answer
208 views

Extracting text from cells, preserving non-ASCII characters

Consider the following setup, based on this answer by WReach: ...
5
votes
3answers
133 views

How to extract the displayed name of an entity

Entities are typically displayed in their elided form: It's useful when exploring the output of EntityList to have access to the canonical name of the ...
5
votes
2answers
140 views

Why does MakeBoxes mess up RowBox ordering?

When I use RowBox for MakeBoxes the order of the elements is changed for TraditionalForm, if there is a plus (+) in the list of elements. ...
5
votes
2answers
184 views

Customizing display of partial differential equations

I am manipulating partial differential equations symbolically, and would like to get the easily readable form $\rho \frac{\partial v}{\partial t}$, leaving variables implicit. Based on suggestions ...
5
votes
2answers
102 views

Removing spurious parenthesis in `TraditionalForm`

I don't understand the following behavior (in v 9.0.1) of TraditionalForm regarding insertion of parenthesis. Let us start with the a definition for ...
5
votes
2answers
158 views

How do I mimic the functionality of “<>”?

The Cell expression for: <> is Cell[BoxData["<>"], "Input"] However similar expressions are parsed into RowBox(...
5
votes
2answers
113 views

How to robustly apply ToBoxes to a Dynamic expression?

Inserting a Dynamic object in a boxform expression messes up syntax colouring. See the following example. where the variable ...
5
votes
1answer
669 views

How to extract a possible closed form from WolframAlpha[] output

To find a possible closed form of a number, I can use the function WolframAlpha["6.38905609893065", IncludePods -> "PossibleClosedForm"] It returns a result ...
5
votes
1answer
79 views

What are “\<” and “\>” delimiters in box expressions?

If I enter a string (say, "abc") in a cell, and then switch to box representation (Shift+Ctrl+E or menu item ...
5
votes
1answer
379 views

How to convert an image to a compressed string representation equivalent to one copied to clipboard by `CopyToClipboard[image]`?

In my recent question I asked How to embed an image into a string? The suggested solution was ...
5
votes
1answer
38 views

Strange problem with Derivative and BoxForm`MakeDerivativeBoxes

All of the following three lines should produce the same output, but the third variant produces an error on output. ...
5
votes
0answers
123 views

Same input,different result? [duplicate]

Using this code,you can see,same input, but the output are different. So weird! If I copy this code here, it outputs normally. So what's the problem? Ps:I use ...
4
votes
2answers
168 views

ToBoxes Respect Spaces Code

Is there a way to force either ToBoxes or MakeBoxes to respect the spacing that occurs in the code? For example is there a way ...
4
votes
1answer
87 views

How can I define MakeBoxes for Inactive forms of user-defined heads?

Here I define a MakeBoxes for Times: ...
4
votes
1answer
156 views

Unexpected result when reading Cell with comment-lines by NotebookRead

Bug introduced in 9.0 and fixed in 9.0.1 When considering this question about re-formatting Cell (also this one), I encountered an issue which confuses me. I'll ...
4
votes
1answer
88 views

Combination of CellPrint and PrintTemporary, or DisplayForm for Cells

I'm programmatically generating some formatted output that generates a cell in the form of a Cell[] expression. For instance, the output might be ...
4
votes
0answers
88 views

Using an external Pattern breaks Format

I noted while writing this answer that using an external Pattern on Format doesn't work: ...
3
votes
2answers
178 views

Subscript and Part: What's going on in this example?

Example I came across the following simple example from A Beginner's Guide to Mathematica, by McMahon and Topa, which I believe was written circa version 5.2. (FWIW, I'm using v9.) ...