On Jan 1, 8:34 am, davie <[email protected]> wrote: > Hi Josh > To achieve what you want for your catagories you will need to generate > the XML from an SQL data base such as My SQL. > You will need to create a SELECT satement from your checkboxes.
That is certainly one way to do it. But there are lots of options. 1. doesn't have to be xml, could be JSON 2. if the dataset is small enough, it could be implemented in the client (will be fairly complicated javascript) There have been discussions about this topic before (but I think they were in the v2 group, you might try searching there). -- Larry > Regards Davie > > On Dec 31 2010, 2:23 am, Kirkman14 <[email protected]> wrote: > > > > > > > > > Hi everyone, I'm trying to build a map of trails around St. Louis. > > > I'm using an XML file to hold all the trail/marker/map data. For each > > marker, I have categories like "surface," "difficulty," "facilities," > > etc. > > > Some of these categories will have only one possible value for any > > given trail. For example, a trail allows pets or it doesn't. > > > But in other categories, a trail might have several values in one > > category. For example, a trail might have bathrooms, fountains, AND > > food as "facilities." > > > So, ultimately I want this page to display a grid of six categories, > > with all possible values (and checkboxes) under each category. In this > > way, a user could check what features he/she is interested in a trail > > having. Then the map would update to show all trails that have these > > features, and hide those that don't. > > > The fact that elements can have multiple values introduces some > > complexity. > > > I've got to say that I am new to Google Maps, javascript, and XML, and > > I may have bitten off more than I can chew. But after working on this > > for a while, I have made some progress. > > > My first example page is > > here:http://www.joshrenaud.com/pd/trails_withcheckboxes.html > > > It only implements one category (surface), and only partially. > > > It builds off this > > example:http://www.geocodezip.com/v3_MW_example_categories.html > > > It's a little wonky. When the page loads, it doesn't show/hide the > > markers the way I have specified in Javascript. (Only "asphalt" should > > be checked after the page loads). > > > It does seem to work okay after page load. Once you start checking/ > > unchecking the various surface attributes, the markers DO hide/show. > > > Yet, I can see this approach is probably all wrong. One of the markers > > on the map has both "paved" and "unpaved" values. Unchecking "unpaved" > > while leaving "paved" checked causes the marker to disappear, and > > that's not ultimately what I want to happen. If a trail has *any* of > > the checked characteristics, I want it to show up. > > > Sorry for the long post. Here's what I'm hoping: > > > 1. That someone can explain why the checkmarks don't get set the way I > > want them to when the page loads. I want to know what I did wrong > > there. > > > 2. That someone can suggest a different approach for achieving the > > "grid of categories" I describe above. My gut is telling me that the > > show/hide I'm building off of won't do it. > > > Thanks in advance for any help/advice anyone can offer. > > > --Josh -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
