I would like to know the accuracy with which it makes sense to transmit the coordinates in GMap (for example, to create markers).
In the pages API strict instructions not found, there is only a link that toUrlValue — defaults tochnstyu 6 decimal places.
In the static API stated that "the Geographical coordinates defined by the numerical values separated by commas in a text string, up to 6 decimal places. For example, "40.714728,-73.998672" is a valid value of geographical coordinates. Accuracy of over 6 decimal places is ignored."
6 decimal places is accurate to 11 centimeters at the equator. Ie 5 discharges can be mistaken for "accuracy meter". Now look at yourself — if you have a markers mark the location of individual houses, you will need at least 5 digits, if cities — and then 3 bits will suffice.
Jules56 answered on October 8th 19 at 02:20
And what hinders to take and test accuracy when different input data?
Put on maximum magnification, and compare the position of the marker (if the eye is difficult — it is a screenshot and the diff in the graphic editor).