user20891: I have a GSM Sim900 connected to an Arduino Uno. I'm successfully able to use HTTP READ commands to show data from the web on the Arduino's serial monitor. It is showing complete HTML from that URL on the serial monitor.
Now, how should I filter data from the web? I mean I just want to display selected numbers in the serial monitor and not the complete HTML.
And secondly, how should I store these numbers into a variable so I could use them as input data for Arduino?
Thank you.

user8033: You should read the manual.
More specifically the "Sim900 AT reference".
I've found it on a russian server (https://www.google.nl/url?sa=t&source=web&rct=j&url=http://wiki.amperka.ru/_media/%25D0%25BF%25D1%2580%25D0%25BE%25D0%25B4%25D1%2583%25D0%25BA%25D1%2582%25D1%258B:gprs_shield:gprs-shield_sim900_at_commands.pdf&ved=0ahUKEwinze2Tp7fQAhWBMSYKHQFkBh0QFghEMA0&usg=AFQjCNGKd5Uohe7CmcJcIc1Am-SKdRsWXg&sig2=XIsvvkLWHs60sTo7FZ7tWw) but you may want to try and get it directly from the manufacturer.
In the datasheet, it will explained what values are allowed with the "at+httpread" command. You can actually specify which part you want to read. This is usefull when your Arduino can't parse the complete page.
If you have control over the page, you may also generate a device-friendly page consisting of key-value pairs, instead of it being a whole HTML page.


20891: <p>I have a GSM Sim900 connected to an Arduino Uno. I'm successfully able to use HTTP READ commands to show data from the web on the Arduino's serial monitor. It is showing complete HTML from that URL on the serial monitor.</p>

<p>Now, how should I filter data from the web? I mean I just want to display selected numbers in the serial monitor and not the complete HTML.</p>

<p>And secondly, how should I store these numbers into a variable so I could use them as input data for Arduino?</p>

<p>Thank you.</p>
 8033: <p>You should read the manual.
More specifically the "Sim900 AT reference".
I've found it on a russian server (<a href="https://www.google.nl/url?sa=t&amp;source=web&amp;rct=j&amp;url=http://wiki.amperka.ru/_media/%25D0%25BF%25D1%2580%25D0%25BE%25D0%25B4%25D1%2583%25D0%25BA%25D1%2582%25D1%258B:gprs_shield:gprs-shield_sim900_at_commands.pdf&amp;ved=0ahUKEwinze2Tp7fQAhWBMSYKHQFkBh0QFghEMA0&amp;usg=AFQjCNGKd5Uohe7CmcJcIc1Am-SKdRsWXg&amp;sig2=XIsvvkLWHs60sTo7FZ7tWw" rel="nofollow noreferrer">https://www.google.nl/url?sa=t&amp;source=web&amp;rct=j&amp;url=http://wiki.amperka.ru/_media/%25D0%25BF%25D1%2580%25D0%25BE%25D0%25B4%25D1%2583%25D0%25BA%25D1%2582%25D1%258B:gprs_shield:gprs-shield_sim900_at_commands.pdf&amp;ved=0ahUKEwinze2Tp7fQAhWBMSYKHQFkBh0QFghEMA0&amp;usg=AFQjCNGKd5Uohe7CmcJcIc1Am-SKdRsWXg&amp;sig2=XIsvvkLWHs60sTo7FZ7tWw</a>) but you may want to try and get it directly from the manufacturer.</p>

<p>In the datasheet, it will explained what values are allowed with the "at+httpread" command. You can actually specify which part you want to read. This is usefull when your Arduino can't parse the complete page.</p>

<p>If you have control over the page, you may also generate a device-friendly page consisting of key-value pairs, instead of it being a whole HTML page.</p>

<p><img src="https://i.stack.imgur.com/g4cBg.png" alt="enter image description here"></p>
