Skip to content

Latest commit

 

History

History
98 lines (66 loc) · 2.37 KB

notes.md

File metadata and controls

98 lines (66 loc) · 2.37 KB
Raw

New rows are specified by

<row>
<\row>

Within the row header, attributes r and spans specify the row number and number of columns in the row respectively.

<row r="6" spans="1:9">
</row>

Populated cells result in a <c><\c> header which also contains various attributes. These attributes depend upon the content of the cell - which defines the cell type.

Cell types t="" include

  • s : string
  • <blank> : normal formula or a value only
  • array : array formula
  • shared : shared formula

Values

The simplest cell definition contains only a <v><\v> header.

<row r="3" spans="1:9">
    <c r="A3">
         <v>9.48</v>
    </c>
</row>

The value of the cell is stored in the <v><\v> header.

Strings

String are stored in a separate XML file called sharedStrings.xml and referred to by an index which is stored in the <v><\v> header.

<row r="1" spans="1:9">
	<c r="A1" t="s">
		<v>0</v>
	</c>
</row>

The t="s" flag indicates that a lookup is required.

Formulas

There are three types of ways for storing formulas.

Stored directly

In this case, the text equivalent (minus the = sign) is stored in the <f><\f> value. The ca="" attribute refers to the location within the calcChain.xml file of this cell.

<c r="E7">
	<f ca="1">E6+$C$6</f>
	<v>4.45</v>
</c>

The result of the formula calculation is stored in the <v><\v> value.

Shared

Shared formulas are created in Excel when copying using fill command or equivalent. The formula is stored once in the first cell in which it is defined and assigned a shared index using the si="" attribute in the <f><\f> header.

<c r="G8">
	<f t="shared" ref="G8:G10" si="1">F8+G7</f>
	<v>6</v>
</c>

In subsequent cells that share this formula, the formula is referenced with the same shared index si="".

<c r="G9">
	<f t="shared" si="1"/>
	<v>10</v>
</c>

One issue with this is that Excel must recompute the references dynamically upon opening, and so any text representation of shared formulas must also be recomputed before accurate text based differences could be computed.

Again, the computed result of the formula is stored in the <v><\v> value.

Array

Array based formulas are stored directly in the value of the <f><\f> header.

<c r="I9">
	<f t="array" ref="I9">H9</f>
	<v>14</v>
</c>

The computed result of the formula is stored in the <v><\v> value.