Skip to content
Permalink
Browse files
adding some function help files for field calculator, thanks to Zolta…
…n Siki
  • Loading branch information
mach0 committed Feb 21, 2013
1 parent a71946c commit a788b0d9f8a557b32a9b31ee1dcb3b24a20ff210
@@ -0,0 +1,12 @@
<h3>acos() function</h3>
Returns arcuscosinus of a value in radians.


<p><h4>Syntax</h4>
acos(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> cos of an angle.</p>

<p><h4>Example</h4>
acos(0.5) -> 1.0471975511966</p>
@@ -0,0 +1,12 @@
<h3>asin() function</h3>
Returns arcussinus of a value in radians.


<p><h4>Syntax</h4>
asin(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> sin of an angle.</p>

<p><h4>Example</h4>
asin(1.0) -> 1.5707963267949</p>
@@ -0,0 +1,12 @@
<h3>atan() function</h3>
Returns arcustanget of a value in radians.


<p><h4>Syntax</h4>
atan(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> tan of an angle.</p>

<p><h4>Example</h4>
atan(0.5) -> 0.463647609000806</p>
@@ -0,0 +1,15 @@
<h3>atan2() function</h3>
Returns arcustangens of y/x using the signs of the two
arguments to determine the quadrant of the result



<p><h4>Syntax</h4>
atan2(<i>real</i>, <i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> y coordinate difference<br>
<i>real</i> -> x coordinate difference</p>

<p><h4>Example</h4>
atan2(1.0, 1.732) -> 0.523611477769969</p>
@@ -0,0 +1,12 @@
<h3>cos() function</h3>
Returns cosinus of an angle.


<p><h4>Syntax</h4>
cos(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> angle in radians.</p>

<p><h4>Example</h4>
cos(1.571) -> 0.000796326710733263</p>
@@ -0,0 +1,12 @@
<h3>exp() function</h3>
Returns exponential of an value.


<p><h4>Syntax</h4>
exp(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> number.</p>

<p><h4>Example</h4>
exp(1.0) -> 2.71828182845905</p>
@@ -0,0 +1,12 @@
<h3>sin() function</h3>
Returns sinus of an angle.


<p><h4>Syntax</h4>
sin(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> angle in radians.</p>

<p><h4>Example</h4>
sin(1.571) -> 0.999999682931835</p>
@@ -0,0 +1,12 @@
<h3>sqrt() function</h3>
Returns square root of a value


<p><h4>Syntax</h4>
sqrt(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> number.</p>

<p><h4>Example</h4>
sqrt(9) -> 3</p>
@@ -0,0 +1,12 @@
<h3>tan() function</h3>
Returns tangent of an angle.


<p><h4>Syntax</h4>
tan(<i>real</i>)</p>

<p><h4>Arguments</h4>
<i>real</i> -> angle in radians.</p>

<p><h4>Example</h4>
tan(1.0) -> 1.5574077246549</p>
@@ -0,0 +1,13 @@
<h3>toint function</h3>
Converts a string to integer number. Nothing changed if a value cannot be converted to integer (e.g '123asd' is invalid).

<p><h4>Syntax</h4>
toint(<i>string</i>)</p>

<p><h4>Arguments</h4>
<!-- List args for functions here-->
<i> string</i> -> is string. The String to convert to integer number.</p>

<p><h4>Example</h4>
<!-- Show example of function.-->
toint('123') -> 123</p>
@@ -0,0 +1,13 @@
<h3>toreal function</h3>
Converts a string to real number. Nothing changed if a value cannot be converted to real (e.g '123.56asd' is invalid). Numbers are rounded after saving changes if the precision is smaller than the result of the conversion.

<p><h4>Syntax</h4>
toreal(<i>string</i>)</p>

<p><h4>Arguments</h4>
<!-- List args for functions here-->
<i> string</i> -> is string. The String to convert to real number.</p>

<p><h4>Example</h4>
<!-- Show example of function.-->
toreal('123.45') -> 123.45</p>
@@ -0,0 +1,13 @@
<h3>tostring function</h3>
Converts a number to string.

<p><h4>Syntax</h4>
tostring(<i>number</i>)</p>

<p><h4>Arguments</h4>
<!-- List args for functions here-->
<i>number</i> -> is integer or real. The number to convert to string.</p>

<p><h4>Example</h4>
<!-- Show example of function.-->
tostring(123) -> '123'</p>

0 comments on commit a788b0d

Please sign in to comment.