WordPress already lets you attach time-based custom data to posts. Tally Graph lets you
plot that data over time using the Google Chart API. Any numeric data will
work, whether it is related to athletic training, profits, environmental footprint,
weight loss, or any topic you care about.
- Tallies data from any numeric value you enter under “Custom Field” in the WordPress post editor.
- Provides daily, weekly, monthly, or yearly tallies.
- Tally either data that accumulates, like donations, or just track a number like current weight.
- You can make basic use of Tally Graph without any knowlege of the Google Chart API, but you can
also use nearly any Google Chart API parameters.
- Rarely requires ugrading
Tally Graph is easier to use than direct Google Chart API calls, but may not be what you need if:
- You’re looking for a point-and-click full graphical user interface
- A post for each data point is too cumbersome for your graphs
- You need to graph time intervals shorter than a day
Move on to the Other Notes tab for details.
You’ll want to do two things to use Tally Graph:
- Enter Data – put the numbers you want to track in a WordPress custom field.
- Visualize Data – tally and plot your numbers over time in a Google Chart.
Tally Graph looks in WordPress custom fields for data to pass on to the
Google Chart API. As indicated by those instructions, a custom field consists
of a key and value. You’ll make up the key. The value must be some kind of
number. In the next step you’ll use the key name to tell Tally Graph which
custom field data to use.
If you want to enter data without publishing a post, just put the custom fields
on a dummy post and check “Keep this post private”. You may still want to edit the
Say you have a bunch of posts with the custom field key “Marbles Lost”. You may
feel like you’ve been losing your marbles faster recently, but you’re not sure,
so you write a new post (or a page) containing this shortcode:
[tally_graph key="Marbles Lost"]
The Tally Graph plugin will replace that shortcode with a bar chart of how many
marbles you’ve lost each month for the past six months. Those are default settings
you can change with some more parameters.
[tally_graph key="Marbles Lost" tally_interval="day" interval_count="14" to_date="2008-05-01" chs="300x220" chtt="Marbles Lost"]
That shortcode results in a 300 pixel wide, 220 pixel high graph of your marbles
lost in the 14 days prior to May 1st, 2008.
Shortcodes are great in post and page content, but if you want a graph somewhere
else on your site, like in a sidebar, you’ll need a template tag. Aside from the
different format, it works the same:
<?php echo tally_graph('key=Marbles Lost&tally_interval=week&interval_count=4'); ?>
That makes a nice sidebar graph of marbles lost over 4 weeks, up to the date of
the last post displayed.
Read the Usage section first.
You type a tag directly into a post or page using WordPress shortcode format.
To put a tag in a theme template, use template tag with querystring parameters.
Both formats take the same parameters listed below.
This tag is replaced with an image created with the Google Chart API.
[tally_graph key="My Key"]
<?php echo tally_graph('key=My Key'); ?>
key – Required.
The key name of the custom field to use for the graph. Multiple keys can
be included, separated by a comma.
year. default is
this is the interval of time over which the custom field values are
year. default is tally_interval.
this is the interval of time that is labeled at the bottom of the graph
This is the number of intervals to include in the graph.
Valid values include several date formats, like
October 31, 2007,
yesterday. Default is the date of the
most recent post displayed.
The graph is constructed backward in time from this date.
Valid values are
delta. Default is
cumulativemethod totals custom field values for each interval.
trackmethod doesn’t total field values, but fills in time gaps
between values. This is good for tracking numbers like current weight that you
just want to track without tallying.
deltamethod computes a running total, adding changes to the total
for each interval. This can be used for data where only losses and gains are
entered. One entry is necessary to establish a starting value, then gains and
losses are recorded as positive and negative values.
false. Default is
Turn off URL caching. Rarely used – only when the same graph appears more than
once on a page.
This is a Google Chart API parameter, the chart size in pixels.
This is a Google Chart API parameter, the chart type.
is a vertical bar chart.
Any other Google Chart API parameters are passed along, so you
can go nuts with all the options. You’ll probably use at least
the chart title.
If you want to create your own image tag in a template, this tag will give
you only the URL for the chart.
<?php echo tally_graph_url(); ?>
Parameters are the same as the
Ảnh màn hình
Install using any [standard plugin installation method][https://codex.wordpress.org/Managing_Plugins#Installing_Plugins].
- Do I have to know about this Google API thing, or anything else techy?
You can get by with very little techyness, just WordPress custom fields
and shortcodes. They’re really not bad – look over the Usage section under Other Notes.
It’s not a point-and-click interface either, but it is easier than building
your charts from scratch.
If you do want to get adventurous, you can have fancier charts in more places.
- Are there any examples?
- Where are the custom fields?
As of WordPress 3.3 you must check a box in the “Screen Options” area in the upper right of the post editor page
to make the custom field interface appear.
- Can I skip learning to configure Tally Graph and just hire you to put charts on my site?
Sure, just send email to firstname.lastname@example.org.
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- New feature: the label_interval parameter