Snipplr - ginoplusio

(PHP) How to get images from Google images with PHP

Tue, 30 Mar 2010 07:36:57 GMT

This simply php function will retrieve the links of the images from Google Images searched with a keyword. The function just calls images.google.it and parse the html to find the url of the images, in this case the urls are stored in the javascript, so the parsing doesn’t use any html tag to find data. It builds an array of urls and return it.

(JavaScript) Calculate distance between two points with latitude and longitude coordinates

Sat, 26 Dec 2009 17:57:14 GMT

This function calculates distance with the Haversine formula, this formula assumes that our Earth is spherical, but it isn’t since it’s more like a big orange fruit also compresses at poles. I’ve read that this function has an error about + o – 3 meters (it depends), but it’s a small error for many purposes.

(JavaScript) Javascript decimal to degrees for google maps

Sat, 26 Dec 2009 17:54:56 GMT

When you show the coordinates of a point, it’s sometimes better to show them as degrees and not as deciaml (even if decimal is simpler). Each of the two coordinates can be converted with the same function. In the function call the “tipo” is the type of the “v” value: if you call the function without the type, then the default type is “N”, that means “NORTH”, it means that you’re converting a Latitude value. Values for latitude type are “N” for NORTH and “S” for SOUTH. If you specify “E” or “W” than you’re converting a Longitude value.

(JavaScript) Calculate distance on Google Map v3 with a ruler

Sat, 19 Dec 2009 14:03:48 GMT

I’ve made a ruler to measure distances on a Google Map V3. The file Ruler.js contains a two function: one to calculate the distance between two points on the map with their position expressed in decimal degrees, and one function that add the ruler. Ther “ruler” is composed with two markers, a poly and two labels which show the distance. Look the link for a working demo.