rrd_graph

(PECL rrd >= 0.9.0)

rrd_graph — Crea la imagen de un conjunto de datos

Descripción

rrd_graph(string $filename, array $options): array

Crea la imagen de un conjunto de datos particulares desde el archivo de RRD.

Parámetros

filename: El nombre del archivo de salida del gráfico. Este generalmente tiene una terminación .png, .svg o .eps, dependiendo del formato de salida que desee.
options: Las opciones para la generación de la imagen. Consulte la página del manual de gráficos rrd para conocer todas las posibles opciones. Todas las opciones (definiciones de datos, definiciones de variables, etc.) son permitidas.

Valores devueltos

Se devolverá un array con información acerca de la imagen generada, false cuando se produzca un error.

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User Contributed Notes 6 notes

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Anonymous ¶

4 years ago

This documentation page is useless ... 

"See man page of rrd graph for all possible options"

I thought I am looking at the documentation, of not, why not provide a link ?

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Dk ¶

11 years ago

You can get the latest RRD Error by simply doing print_r(rrd_error()) immediately after the rrd_graph() call.

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Matt C ¶

12 years ago

Note; apache server requires write access to the folder in which the image is to be created otherwise no image file is produced, and (unhelpfully) no error is generated.

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-2

geekcom ¶

4 years ago

For a rrdgraph doc/man page see:

https://docs.oracle.com/cd/E88353_01/html/E37839/rrdgraph-1.html

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info at ukee dot nl ¶

9 years ago

When using style features like:  --font TITLE:13:Times
use in your code: --font=TITLE:13:Times

the "=" is missing in the documentation

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Anonymous ¶

11 years ago

When I add 

--font AXIS:8:

into $options, 

I receive the next error:

PNG creation error: unknown option '--font AXIS:8:'

According to docs from rrdtool site the right syntax is:

[-n|--font FONTTAG:size:[font]]

This lets you customize which font to use for the various text elements on the RRD graphs. DEFAULT sets the default value for all elements, TITLE for the title, AXIS for the axis labels, UNIT for the vertical unit label, LEGEND for the graph legend, WATERMARK for the watermark on the edge of the graph.

Use Times for the title: --font TITLE:13:Times

Note that you need to quote the argument to --font if the font-name contains whitespace: --font "TITLE:13:Some Font"

If you do not give a font string you can modify just the size of the default font: --font TITLE:13:.

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