{calculations} is about calculations in (La)TeX documents. A popular package is calc although may other also exist (fp, pgf, and LaTeX3 packages).

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21
votes
2answers
397 views

Sum of finite series using LaTeX 3

Is it possible to calculate the value of a finite series, say, using LaTeX 3?
8
votes
2answers
425 views

Rounding up decimal number using LaTeX 3

I would like to use LaTeX 3 to round up decimal numbers; I want something like the following: If I type \RoundingUpFunction{2.7} it should return 3 as output. Unfortunately, I haven't taken the ...
13
votes
5answers
464 views

Calculations in TikZ for iterative procedure

In many \foreach iterative procedures in TikZ I would like to relate the generic node called n\x -- where x is a natural number -- to another node the name of which is obtained by applying basic ...
1
vote
1answer
79 views

How can I put a minipage that fits to the actual line width inside of a TikZ Node?

Question I would like to put a minipage environment inside of a tikz node. I know this is done already with the align=left command, but if you set a minimum width of the node to \linewidth, then the ...
6
votes
3answers
358 views

Tikz: drawing in perspective

I am working on drawing a beam in perspective. I have my point I want to use as the perspective point (10, 3). What would be the way to draw along this line? For instance, consider ...
3
votes
1answer
56 views

calculating polar coordinates with tikz

Random polar coordinates has an example of the general sort of syntax I'm aiming to follow. For some reason the result is not working as intended. In the MWE, I've commented out the line where I ...
16
votes
7answers
1k views

Calculating right angle triangle side inside LaTeX

I'd like compute the width of a screen from it's diagonal and its aspect ratio inside a LaTeX document. The formula is easy to get from the Pythagorean theorem, but needs square roots. I currently ...
22
votes
5answers
4k views

Floating point calculations in LaTeX?

I am looking for a method to do minimal floating point / integer calculations in LaTeX, not for the purpose of package writing, but for the production of actual text. Here is an example to ...
17
votes
3answers
753 views

square root of number in counter

I would like to get the square root of a number which I have stored into a counter. I have been using the calc package for summation and multiplication operations, but I cannot find anything like ...
3
votes
1answer
99 views

Why can't I use a variable from a \foreach loop inside a calc library macro?

Question Why can't I use the \foreach variable as a percentage in my calculations with the calc library of TikZ? Sample Code In the following, I could replace the variable \mypercentage with an ...
3
votes
0answers
28 views

Formatting numbers the Indian way [duplicate]

This is a follow-up question to Handling numbers and calculations. The numbers printed by \num[group-separator={,},group-minimum-digits=4]{\the\numexpr(5000)\relax} will produce comma separated ...
2
votes
2answers
36 views

Handling numbers and calculations [duplicate]

I have to deal with a lot of numbers in my latex documents. So far, I have been using a rudimentary \newcommand{\VarOne}{1000} to define \VarOne and then use it as it is using \VarOne{} in the ...
5
votes
1answer
138 views

Adding a number to every element

I have a table, whose entries are a list of one or more numbers. Now, I need that all numbers in the table are to be incremented by 1. For example, say, I have the table: \documentclass{article} ...
3
votes
1answer
31 views

global variables and/or array of variables

I'm looking for a way to obtain (in tex/latex - still difficult for me to determine the difference - I guess it should state latex) run-time defineable global variables to be used with the fp package. ...
3
votes
2answers
122 views

Compute the difference between two time points on different dates

This is a follow-up question to How to compute the difference between two time points (e.g., 11:30 am and 01:20 pm => 110 min)?. Consider the code from David's excellent answer here: ...
13
votes
2answers
747 views

How to compute the difference between two time points (e.g., 11:30 am and 01:20 pm => 110 min)?

Is there a simple way to compute the difference between two times (same day), so 11:30 am and 01:20 pm should lead to 110 min (or 1h 50min), for example? I saw the datenumber package but it only seems ...
1
vote
1answer
36 views

How to reuse a term in calc macro of latexcalc?

Although latexcalc seems to be no longer in active development, I'd like to know whether it is possible to reuse a term which I want to both display and calculate, but only maintain once, e.g ...
1
vote
1answer
25 views

interactive tooltipp improvement

according to this article, especially to AlexGs tooltipp code [1], it seems to me, that if the text inside the tooltipp will exceed more than one line, it disappears outside the page. It would be ...
0
votes
0answers
40 views

Command-scopes in a tabular-environment

I'm trying to use a command which aggregates some values. When using it with normal text, it is properly working but if I call the command in a table it seems that there is a problem with scopes or ...
4
votes
1answer
43 views

how do I multiply a command argument with a constant?

I'm writing a novel and I defined a set of commands for starting a new chapter: %A \newcommand{\AKapitel}[1]{\lettrine[lines=3, lraise=-0.2,findent=-22pt, nindent=14pt, ...
8
votes
2answers
202 views

How to do simple calculation in latex tables

Here I wish to do three things: 1) I want my table to be like this one below whereas mine is 2) I want numbers to appear in the same format as their heading p (in bold) 3) I want latex to ...
3
votes
1answer
40 views

spacing from calculator package

I'm trying to include images and overlay them with their width and height info in mm. I save the image to a box and then use the calculator package to calculate the mm width and height of that box. ...
6
votes
2answers
141 views

Trying to convert Hrs:Mins to Mins

I am having a bit of trouble trying to convert a time format from Hours:Minutes for instance 12:05 into 12*60+5 = 725, ie I would like to use 725 as a number of minutes. I am already using the number ...
4
votes
2answers
91 views

Calculator and calculus package: result [.] dot instead [,] comma

My codes, \documentclass{article} \usepackage{calculator} \usepackage{calculus} \newcommand\teo{3} \newcommand\job{,5} \begin{document} \MULTIPLY{\teo}{340}\W \MULTIPLY{\job}{5605}\WW ...
6
votes
2answers
227 views

Use input inside a spreadtab environment with calculations

My aim is to create a command for inserting tables, which will format the table, and add calculations on its values, given a file containing the raw data of the rows only. ...
6
votes
2answers
141 views

the calc package doesn't compute the correct value

I get an unexpected result using the calc package. I simply try to multiply the real value '10.01' by the entire value '10000' and to store the result in a counter. But the returned value is not the ...
5
votes
5answers
928 views

How can I multiply two numbers?

I use pgffor package and I have \foreach \n in {1,...,10}{**something I want**} How can I print n*(n+1) for each n? When I write just \n*(\n+1) instead of **something I want**, ...
0
votes
2answers
59 views

LateX code for 1+2+3+4+5 = 15 [duplicate]

Can anyone help please? I need to know how to make the sum of value S(n) = 0+1+2+3+4...+(n-1)+n (example: 0+1+2+3 = 6 , 0+1+2+3+4+5+6+7 = 28 and so on) on Latex I am new in this language. \batchmode ...
15
votes
6answers
2k views

Sum of (example: 0+1+2+3 = 6 , 0+1+2+3+4+5+6+7 = 28 and so on)

Can anyone help please? I need to know how to make the sum of value S(n) = 0+1+2+3+4...+(n-1)+n (example: 0+1+2+3 = 6 , 0+1+2+3+4+5+6+7 = 28 and so on) on Latex
10
votes
2answers
794 views

Page number in Fibonacci style

How to display the page number in Fibonacci. Example: Normal page number 1, 2, 3, 4, 5, 6, 7, 8,... Fibonnacci page number style: 1, 1, 2, 3, 5, 8, 13, ...
3
votes
2answers
132 views

How to calculate and use the ratio of two lengths?

I want to calculate the ratio of two lengths in Latex, so that I can then stretch an en dash by that ratio. For example, in the code below, I'd like to replace the "0.7" value of FakeStretch with the ...
7
votes
5answers
2k views

How to find the ratio of a length command (e.g., \textwidth) to a reference value (e.g., 6cm) ?

How to find the ratio of a length command (e.g., \textwidth) to a reference value (e.g., 6cm) ? Actually I want to use the ratio for the \scalebox argument, e.g., \scalebox{<ratio>}. ...
3
votes
0answers
26 views

Use data from other multiple data files with calculations [duplicate]

This answer shows nicely how to use data from another file while plotting data using \addplot table. However, when trying to access the create on use column using \thisrow{}, an error occurs. For ...
8
votes
2answers
303 views

How can you make custom counter display types?

I'm a comp sci prof working on an exam for my students in LaTeX, using the exam class. I like to throw in a few in-jokes here and there. Unfortunately, the class breaks if you try to use 0-indexing on ...
17
votes
6answers
846 views

Rounding a number to its hundred

Does anybody know how I could have LaTeX round a number like 2,386 so that I finally get only written 2,300? I tried with siunitx and its option [round-mode=places,round-precision=-2] but it didn't ...
2
votes
2answers
155 views

Relative node positioning with calc library

Hi I'm trying to place same nodes relative to each other. I'm trying to place a node in the middle between two other nodes, but also half a cm to the right. \usepackage{tikz} \usetikzlibrary{calc} ...
1
vote
0answers
93 views

TikZ decorated paths and fixedpointarithmetic library

Background: I am trying to apply multiple decorations to a path in a TikZ picture. In this particular case, my attempts fail as the maximum dimension PGF can calculate with is exceeded. This is not ...
1
vote
0answers
65 views

Is there a counter or variable that can be used to store numbers with decimals?

I'm working on an invoice document which has a "Grand Total" at the end of the document after some rows of invoice items. As such, I need to keep a running count of the total for each row. Using the ...
7
votes
4answers
316 views

Debugging Advice: Dimension too large (Need stack trace)

Background: I am stuck on a "Dimension too large" problem which is occurring during index generation. This is a large index of links to files (along with other related information), and am sure the ...
5
votes
1answer
176 views

Numeric variable in LaTeX

I have been given the task of creating a LaTeX template for producing marking reports for student research proposals. We need an easy way to assign marks (numeric values) to particular qualities of ...
4
votes
1answer
96 views

Calculation of an absolute position

My question is about calculating with the package textpos. By saving the vertical position of a block of text with zsavepos and calculating the middle of it, I want to position a block of text at the ...
2
votes
1answer
95 views

Time calculations

Based on a given starting time, I'd like to automatically calculate a time table. Based on https://groups.google.com/forum/#!topic/de.comp.text.tex/BQrRUYmDrHw I put the following MWE together: ...
52
votes
11answers
2k views

How can I define a mathematical function as a LaTeX macro?

I am attempting to create a usable function within LaTeX such that its inputs are transformed mathematically. However, I cannot find any documentation that can perform such mathematical function ...
5
votes
2answers
255 views

Do multiplication rules differ in TikZ compared to standard TeX?

I'd like to scale a line according to \figscale. Here it is said that the below syntax should work in general, but in this graphic it does not. As the picture shows, the numbers are just concatenated ...
2
votes
1answer
63 views

Building evaluated arrays

I'm trying to build an array dynamically in latex then use it in tikz. I'm a little confused about how to create an array and add evaluated mathematical expressions to it (I'm trying arrayjob). ...
2
votes
1answer
64 views

\widthof text in a def'd subroutine inside a tikzpicture? [duplicate]

I have already seen \widthof within tikzpicture, but this is slightly different. I have a rather complex Tikz image, which I'd like to eventually include in a Latex document; as such, I'd like this ...
2
votes
1answer
64 views

Using a fp variable in a longtabu header

So, I am using the tabu package (which I need to use over tabular others for several reasons) to make a long table spanning several pages. This table contains currency amounts in a column, and I'd ...
2
votes
2answers
77 views

Automate a running counter through a document

The following minimal example demonstrates my situation: \documentclass{article} \usepackage{calculator} \newcommand{\pts}{0} \begin{document} \ADD{\pts}{3}{\pts}\pts \ADD{\pts}{3}{\pts}\pts ...
13
votes
5answers
458 views

Transform big number into scientific format

I want to convert my big integer number into a shorter form; for example \convert{123456789} = 1.23 x 10^9 Is there any package which allows me to do so?
3
votes
3answers
208 views

Summation of a list of numbers

The next code gives : 1 1.2 3 But 1 2.2 5.2 is expected. What is wrong ? \documentclass[tikz]{standalone} \begin{document} \xdef\Sum{0} \foreach \i in {1,1.2,3} { \pgfmathsetmacro\Sum{\Sum+\i} ...