Crthuky

How can I leave some empty cells in a table?

documentclass[a4paper,english,12pt,oneside]book

usepackage[left=20mm]geometry
usepackage[T1]fontenc
usepackage[utf8]inputenc
usepackage[english]babel
usepackagegraphicx
usepackageepstopdf
usepackagemathtools

usepackagegraphics
usepackagetabularx
usepackagegeometry
usepackagemultirow
usepackageslashbox


begindocument

begintabularc
hline
backslashboxxy & Scalar & Vector & Matrix\
hline
Scalar & $fracdydx$ & $fracdydx = left[fracpartial y_ipartial x right]$ & $fracdYdx = fracpartial y_ijpartial x$ \
hline
Vector & $fracdydx = left[fracpartial ypartial x_j right]$ & $fracdydx = left[fracpartial y_ipartial x_j right]$\
hline
Matrix & $fracdydX = left[fracpartial ypartial x_ji right]$\
hline
endtabular

enddocument

If you add column delimiters (&) with just a white space in-between, you get empty cells.

In your example, the last two rows could be modified like this:

hline
Vector & $fracdydx = left[fracpartial ypartial x_j right]$ & $fracdydx = left[fracpartial y_ipartial x_j right]$ & \
hline
Matrix & $fracdydX = left[fracpartial ypartial x_ji right]$ & &\
hline

You could take as an example the table below.

documentclass[12pt,a4paper]article
usepackage[T1]fontenc
usepackage[latin1]inputenc
usepackagebooktabs
usepackage[font=small,labelfont=bf,tableposition=top]caption

begindocument
 begintable[!ht]
 captionaaaaaaaaaaaaaalabeltab:aaaaaaaa
 centering
 begintabular*15ctoprule
 multicolumn10cOutputs & 33 & 3 & 3 & 3 & Clock \ midrule
 & & & & & & & & & & 1 & 1 & 0 & 1 & $t_0$ \
 & & & & & & & & & 1 & 1 & 0 & 1 & 0 & $t_1$ \
 & & & & & & & & & & & & & & vdots \
 1 & 1 & 0 & 1 & 0 & 0 & 0 & 1 & 1 & 0 & 1 & 0 & 0 & 0 & $t_10$ \ 
 $a_0$ & $a_1$ & $a_2$ & $a_3$ & $a_4$ & $a_5$ & $a_6$ & $a_0$ & $a_1$ & $a_2$ & $a_3$ & $a_4$ & $a_5$ & $a_6$ & \ bottomrule
 endtabular
 endtable
enddocument

I'm posting this answer because googling for "empty space table" led me here and the answers are not quite what I needed. I know how to create a cell that is empty, but I needed blank space to print out the .pdf later and fill it by hand.

To include empty cells in a table large enough to write something by hand, you can use the vspace command.

MWE:

documentclassarticle
begindocument
 begincenter
 begintabular p4cm
 hline
 Date & War parties & War zones \ hline
 vspace5cm & & \ 
 hline
 endtabular
 endcenter
enddocument

Output:

Simply add space in empty spaces.