This error occurs when LaTeX detects more alignment tabs than it was expecting, and changes one of them to cr, a command used by TeX engines to terminate a line (of cells) within a table.
Common Causes
Incorrect number of columns in table:
When using environments such use alignment characters (&), such as table, align or matrix, we need to make sure that the number of columns specified in the environment matches the number of alignment characters (&) we use before a line break. An example of a mistake is shown below. Here we have written {c|c|c} to specify that we would like three centred columns before each line break, however in the first line of our table, we have included 3 alignment characters and hence four columns. This causes LaTeX to get confused and change one of the alignment characters to cr.
begin{tabular}{c|c|c} 1 & 2 & 3 & 4 \ 5 & 6 & 7 end{tabular}
This then generates an error message which looks like
main.tex, line 7
Extra alignment tab has been changed to cr.
<recently read> endtemplate
l.7 1 & 2 & 3 &
4 \
You have given more span or & marks than there were
in the preamble to the halign or valign now in progress.
So I’ll assume that you meant to type cr instead.
[1
To resolve this error and fix our table, we can either get rid of the extra column by deleting the entry, specify an extra column in the environment options, or place the extra entry on a new line ourselves. An example of each is shown below:
Removing the extra column entry looks like
begin{tabular}{c|c|c} 1 & 2 & 3 \ 5 & 6 & 7 end{tabular}
Adding an extra column in the environment options looks like
begin{tabular}{c|c|c|c} 1 & 2 & 3 & 4 \ 5 & 6 & 7 end{tabular}
Creating a new line (new row) looks like
begin{tabular}{c|c|c} 1 & 2 & 3 \ 4 & & \ 5 & 6 & 7 end{tabular} end{center}
Another way to get a ! Extra alignment tab has been changed to cr error is to use an alignment command (centering, raggedleft, raggedright) in the last row of a tabular environment (when using p{} formatting, of course).
For example, this code will give an error:
begin{tabular}{|p{0.2textwidth}|p{0.2textwidth}|}
A & centering B \
C & D \
end{tabular}
But this code will not:
begin{tabular}{|p{0.2textwidth}|p{0.2textwidth}|}
centering A & B \
centering C & D \
end{tabular}
We can use the environment center to overcome this problem, with the caveat that we will have extra vertical spaces. (needless to say, you may change to c column formatting, if you are willing to give up width control ;))
A quick fix for the problem is to add a zero-width column, e.g., p{0pt}
Quick fix solution:
begin{tabular}{|p{0.2textwidth}|p{0.2textwidth}|p{0pt}}
centering A & centering B &\
raggedleft C & raggedright D &\
end{tabular}
Frequently Asked Question List for TeX
Errors
This is an error you may encounter in LaTeX when a tabular
environment is being processed. “Alignment tabs” are the
& signs that separate the columns of a tabular
(or array or matrix) environment; so the error message
! Extra alignment tab has been changed to cr
could arise from a simple typo, such as:
begin{tabular}{ll}
hello & there & jim \
goodbye & now
end{tabular}
where the second & in the first line of the table is more than the
two-column ll column specification can cope with. In this
case, an extra l in that solves the problem. (If you
continue from the error in this case, jim will be moved
to a row of his own.) Another simple typo that can provoke the error
is:
begin{tabular}{ll}
hello & there
goodbye & now
end{tabular}
where the \ has been missed from the first line of the table.
In this case, if you continue from the error, you will find that
LaTeX has made a table equivalent to:
begin{tabular}{ll}
hello & there goodbye\
now
end{tabular}
(with the second line of the table having only one cell).
Rather more difficult to spot is the occurrence of the error when
you’re using alignment instructions in a p column:
usepackage{array}
...
begin{tabular}{l>{raggedright}p{2in}}
here & we are again \
happy & as can be
end{tabular}
the problem here (as explained in
tabular cell alignment) is that the
raggedright command in the column specification has overwritten
tabulars definition of \, so that
happy appears in a new line of the second column, and the
following & appears to LaTeX just like the second
& in the first example above.
Get rid of the error in the way described in
tabular cell alignment — either use
tabularnewline explicitly, or use the RBS trick described
there.
The amsmath package adds a further twist; when typesetting
a matrix (the package provides many matrix environments), it has a
fixed maximum number of columns in a matrix — exceed that maximum,
and the error will appear. By default, the maximum is set to 10, but
the value is stored in counter MaxMatrixCols and may be
changed (in the same way as any counter):
setcounter{MaxMatrixCols}{20}
FAQ ID: Q-altabcr
-
mlodyotak
- Posts: 4
- Joined: Mon Dec 23, 2013 10:19 pm
! Extra alignment tab has been changed to cr.
what is problem with that
$$ D=(left[ begin{array} {ccc |ccc}
a_1,_1 & ldots & a_1,_n & & & \
vdots & ddots & vdots & & Theta &\
a_n,_1 & ldots & a_n,_n & & & \
hline
& & & & b_1,_1 & ldots & b_1,_n \
& &Theta & & vdots & ddots & vdots \
& & & & b_n,_1 & ldots & b_n,_n & & &
right
end{array}
$$
Last edited by Stefan Kottwitz on Tue Dec 24, 2013 2:04 am, edited 1 time in total.
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Stefan Kottwitz
- Site Admin
- Posts: 10000
- Joined: Mon Mar 10, 2008 9:44 pm
! Extra alignment tab has been changed to cr. Topic is solved
Postby Stefan Kottwitz » Tue Dec 24, 2013 2:13 am
Hi mlodyotak,
welcome to the forum!
You defined 6 columns by begin{array} {ccc |ccc}, but you used more. Just count the column separator symbols (ampersand &), there are more than 6 in the last array line. Reduce those unneeded symbols. Btw. don’t use $$...$$, this is TeX syntax and not recommendable for LaTeX documents, resulting in wrong vertical spacing. Use [ ... ] instead. Here’s a compilable version of it, also the right corrected:
documentclass{article}
begin{document}
[
D=left[ begin{array} {ccc |cccc}
a_1,_1 & ldots & a_1,_n & & & \
vdots & ddots & vdots & & Theta &\
a_n,_1 & ldots & a_n,_n & & & \
hline
& & & & b_1,_1 & ldots & b_1,_n \
& &Theta & & vdots & ddots & vdots \
& & & & b_n,_1 & ldots & b_n,_n
end{array}right]
]
end{document}
- matrix.png (2.83 KiB) Viewed 23416 times
Stefan
LaTeX.org admin
-
mlodyotak
- Posts: 4
- Joined: Mon Dec 23, 2013 10:19 pm
! Extra alignment tab has been changed to cr.
Postby mlodyotak » Tue Dec 24, 2013 10:51 am
I’m very thankfull for that but i have another question how to get Theata on middle of this table maybe u have any idea?? Ok nevermind i solve the problem but i need to do something like that:
- output.jpg (21.54 KiB) Viewed 23380 times
Last edited by Stefan Kottwitz on Tue Dec 24, 2013 3:04 pm, edited 1 time in total.
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Stefan Kottwitz
- Site Admin
- Posts: 10000
- Joined: Mon Mar 10, 2008 9:44 pm
! Extra alignment tab has been changed to cr.
Postby Stefan Kottwitz » Tue Dec 24, 2013 3:06 pm
So I guess it’s solved? I would move the Theta to the column with the ddot.
Stefan
LaTeX.org admin
-
mlodyotak
- Posts: 4
- Joined: Mon Dec 23, 2013 10:19 pm
! Extra alignment tab has been changed to cr.
Postby mlodyotak » Tue Dec 24, 2013 3:24 pm
i need to do this ex and i have no idea how to posit this two big matrix’s how can i sole it this is my latex code. Sorry of my bbcode but i’m rly bad in such a thinks, and my english is not very good as you can see.
$$ f(x) =
left {
begin{array} {rl}
sin (frac {1}{x}) & mbox {dla} x neq 0\
0 & mbox{dla } x in mathbb{R} backslash {0}.
end{array}
right. $$
\
$$detbegin{pmatrix}
a_1,_1 & 0 & 0 & ldots & 0 \
a_2,_1 & a_2,_2 & 0 & ldots & 0\
a_3._1 & a_3,_2 & a_3,_3 & ldots & 0\
vdots & vdots & vdots & ddots & vdots & \
a_n-_1,_1 & ldots & a_n-_1,_n-_1 & ldots & a_n,_m
end{pmatrix}= prod _{i=1}^n a_{i,i} $$
[
D=left[ begin{array} {ccc |cccc}
a_1,_1 & ldots & a_1,_n & & & \
vdots & ddots & vdots & & & Theta\
a_n,_1 & ldots & a_n,_n & & & \
hline
& & & & b_1,_1 & ldots & b_1,_n \
& Theta & & vdots & ddots & vdots \
& & & & b_n,_1 & ldots & b_n,_n
end{array}right]
]
Last edited by cgnieder on Thu Dec 26, 2013 3:03 pm, edited 1 time in total.
-
Johannes_B
- Site Moderator
- Posts: 4183
- Joined: Thu Nov 01, 2012 4:08 pm
! Extra alignment tab has been changed to cr.
Postby Johannes_B » Tue Dec 24, 2013 6:22 pm
I am not quite sure what you want to know, maybe have a look at the following. There are some improvements (cases, commands defined by amsmath for operators ,e.g. sin,det).
documentclass[a4paper]{article}
usepackage[utf8]{inputenc}
usepackage{amsmath}
usepackage{amssymb}
begin{document}
[ f(x) =
left {
begin{array} {rl}
sin (frac {1}{x}) & mbox {dla} x neq 0\
0 & mbox{dla } x in mathbb{R} backslash {0}.
end{array}
right. ]
[ f(x) = begin{cases}
sin (frac {1}{x}) & text {dla} x neq 0\
0 & text{dla } x in mathbb{R} backslash {0}.
end{cases}
]
begin{align*}
prod _{i=1}^n a_{i,i}&=
det begin{pmatrix}
a_1,_1 & 0 & 0 & ldots & 0 \
a_2,_1 & a_2,_2 & 0 & ldots & 0\
a_3._1 & a_3,_2 & a_3,_3 & ldots & 0\
vdots & vdots & vdots & ddots & vdots & \
a_n-_1,_1 & ldots & a_n-_1,_n-_1 & ldots & a_n,_m
end{pmatrix} \
D &=hphantom{det}left[ begin{array} {ccc |cccc}
a_1,_1 & ldots & a_1,_n & & & \
vdots & ddots & vdots & & & Theta\
a_n,_1 & ldots & a_n,_n & & & \
hline
& & & & b_1,_1 & ldots & b_1,_n \
& Theta & & vdots & ddots & vdots \
& & & & b_n,_1 & ldots & b_n,_n
end{array}right]
end{align*}
end{document}
Maybe you can find some help at GUST or CSTUG. TeX user groups around the world.
The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.
-
mlodyotak
- Posts: 4
- Joined: Mon Dec 23, 2013 10:19 pm
Re: ! Extra alignment tab has been changed to cr.
Postby mlodyotak » Tue Dec 24, 2013 10:10 pm
it’s a ex. what i need to do exactly how this is written in pdf and i don’t know how to do in this same lane this two big matrixes
-
Johannes_B
- Site Moderator
- Posts: 4183
- Joined: Thu Nov 01, 2012 4:08 pm
! Extra alignment tab has been changed to cr.
Postby Johannes_B » Tue Dec 24, 2013 10:58 pm
Those matrices, as you say yourself, are very big and simply too big for one line. You could change the font size in the math environment, but this would be an inconsistency.
Another possibility would be to change the printable area (this is shown by showframe) using geometry. Click on »Open in Writelatex« just above the following code and uncomment the geometry line.
documentclass[a4paper]{article}
usepackage[utf8]{inputenc}
usepackage{amsmath}
usepackage{amssymb}
usepackage{showframe}
usepackage{geometry}
%geometry{margin=1cm}%Just for showing, these are bad margins!
begin{document}
[ f(x) =
left {
begin{array} {rl}
sin (frac {1}{x}) & mbox {dla} x neq 0\
0 & mbox{dla } x in mathbb{R} backslash {0}.
end{array}
right. ]
[ f(x) = begin{cases}
sin (frac {1}{x}) & text {dla} x neq 0\
0 & text{dla } x in mathbb{R} backslash {0}.
end{cases}
]
[
%small
footnotesize
det begin{pmatrix}
a_1,_1 & 0 & 0 & ldots & 0 \
a_2,_1 & a_2,_2 & 0 & ldots & 0\
a_3._1 & a_3,_2 & a_3,_3 & ldots & 0\
vdots & vdots & vdots & ddots & vdots & \
a_n-_1,_1 & ldots & a_n-_1,_n-_1 & ldots & a_n,_m
end{pmatrix} = prod _{i=1}^n a_{i,i}
quad
D =left[ begin{array} {ccc |cccc}
a_1,_1 & ldots & a_1,_n & & & \
vdots & ddots & vdots & & & Theta\
a_n,_1 & ldots & a_n,_n & & & \
hline
& & & & b_1,_1 & ldots & b_1,_n \
& Theta & & vdots & ddots & vdots \
& & & & b_n,_1 & ldots & b_n,_n
end{array}right]
]
[
det begin{pmatrix}
a_1,_1 & 0 & 0 & ldots & 0 \
a_2,_1 & a_2,_2 & 0 & ldots & 0\
a_3._1 & a_3,_2 & a_3,_3 & ldots & 0\
vdots & vdots & vdots & ddots & vdots & \
a_n-_1,_1 & ldots & a_n-_1,_n-_1 & ldots & a_n,_m
end{pmatrix} = prod _{i=1}^n a_{i,i}
quad
D =left[ begin{array} {ccc |cccc}
a_1,_1 & ldots & a_1,_n & & & \
vdots & ddots & vdots & & & Theta\
a_n,_1 & ldots & a_n,_n & & & \
hline
& & & & b_1,_1 & ldots & b_1,_n \
& Theta & & vdots & ddots & vdots \
& & & & b_n,_1 & ldots & b_n,_n
end{array}right]
]
end{document}
The smart way: Calm down and take a deep breath, read posts and provided links attentively, try to understand and ask if necessary.
-
symolon
- Posts: 2
- Joined: Wed Oct 18, 2017 9:15 pm
! Extra alignment tab has been changed to cr.
Postby symolon » Wed Oct 18, 2017 10:09 pm
Hey all, I’m getting a similar error while trying to split an equation between 2 lines. I know the error usually means there’s an extra column somewhere but I’m not creating a table and I can’t see the problem. I’ve tried two versions of the code below, the first gives me an error that there’s an extra } or missing right. The second version gives the extra alignment tab changed to cr. It may have to do with the semicolon, but I’m not sure. I’d appreciate any help you can provide.
documentclass{article}
usepackage{graphicx}
usepackage[intlimits]{amsmath}
usepackage{amsthm}
usepackage{amsfonts}
usepackage{amssymb}
usepackage{epsfig}
usepackage{array}
usepackage{subfigure}
usepackage{multirow}
usepackage{subfigure}
usepackage[]{algorithm2e}
headsep = .25in
oddsidemargin = +.25in
textwidth = 460pt
begin{document}
begin{equation*}
begin{split}
J^3 (2) &leftarrow max_{a in A} left[overline{r} (2,1) + lambda left( p(2, 1, 1) * J^2 (2) + p(2,1,2) * J^2 (2) right);\
& overline{r} (2,2) + lambda left( p(2, 2, 1) * J^2 (2) + p(2,2,2) * J^2 (2) right) right] \
end{split}
end{equation*}
begin{multline*}
J^3 (2) leftarrow max_{a in A} left[overline{r} (2,1) + lambda left( p(2, 1, 1) * J^2 (2) + p(2,1,2) * J^2 (2) right); overline{r} (2,2) + lambda left( p(2, 2, 1) * J^2 (2) + p(2,2,2) * J^2 (2) right) right] \
end{multline*}
end{document}
-
Stefan Kottwitz
- Site Admin
- Posts: 10000
- Joined: Mon Mar 10, 2008 9:44 pm
! Extra alignment tab has been changed to cr.
Postby Stefan Kottwitz » Wed Oct 18, 2017 10:25 pm
Hi symolon,
welcome to the forum!
You cannot use a dynamic left and right delimiter pair over several lines, standard amsmath formula environments cannot handle it. You can «close» then temporarily and open again by right. and left. that are invisible delimiters.
begin{equation*}
begin{split}
J^3 (2) &leftarrow max_{a in A} left[overline{r} (2,1) + lambda left( p(2, 1, 1) * J^2 (2) + p(2,1,2) * J^2 (2) right)right.;\
& left.overline{r} (2,2) + lambda left( p(2, 2, 1) * J^2 (2) + p(2,2,2) * J^2 (2) right) right] \
end{split}
end{equation*}
Luckily your formula parts are of the same size, otherwise one would need to tweak the delimiter heights when the line height is different.
Stefan
LaTeX.org admin
In R markdown I want to make the table with 2 rows and 8 columns.
begin{table}[ht]
begin{tabular}{c|c|c|c|c|c|c|c}
hline
variable & N & Mean & Std.Dev & SE Mean & 95% cI & T & P \
Y & 25 & 92.5805 & ? & 0.4673 & (91.6160, ?) & ? & 0.002 \
hline
end{tabular}
end{table}
I entered this command and it returns this error message.
! Extra alignment tab has been changed to cr.
<recently read> endtemplate
l.101 Y & 25 & 92.5805 &
pandoc.exe: Error producing PDF
error: pandoc document conversion failed with error 43
I guess I entered tabular right and nothing to be calculated.
They’ are just texts and numbers.
I tried to search similar questions and compare the examples codes.
But I don’t know how to solve it.
asked Mar 18, 2018 at 16:05
Specify your tablar correctly with extra vertical bars | at the beginning and at the end. In addition escape the percent sign with a backslash %, otherwise it has a meaning as a program code.
begin{table}[ht]
begin{tabular}{|c|c|c|c|c|c|c|c|}
hline
variable & N & Mean & Std.Dev & SE Mean & 95% cI & T & P \
Y & 25 & 92.5805 & ? & 0.4673 & (91.6160, ?) & ? & 0.002 \
hline
end{tabular}
end{table}
Hope this would work for you?
answered Mar 18, 2018 at 16:57
jay.sfjay.sf
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1
I encountered the same error when omitting a justification argument for one of the aligned columns. In this example, I want to left justify two equations using an array rather than a table:
begin{array}{l}
hat{z} =& frac{beta_0}{1 - beta_z} \
hat{z}' =& beta_0+beta_zleft(frac{beta_0}{1-beta_z}right).
end{array}
For which we see the same error:
! Extra alignment tab has been changed to cr.
<recently read> endtemplate
Indeed the principle of the issue is the same as for tabular, however adding vertical bars | will not fix the problem. Only by adding the missing l in begin{array}{l} (which becomes begin{array}{ll}) resolved the error.
answered Oct 5, 2018 at 10:03
WillWill
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