[Ovmsdev] OVMS App missing most charge points, detail info wrong

Michael Balzer dexter at expeedo.de
Mon Jan 12 18:13:03 HKT 2015

Hi Christopher,

thank you for your help!

 From home this morning ( 51.263201, 7.150157 ) I 
had 494/495 stations on the map.
 From office now ( 51.321685, 7.343394 ) I have 
507 stations. The same stations are missing.

The search radius according to the App should 
already be switchable to the vehicle range, but 
that switch has no effect on the number of stations.

So this definitely looks like the 500 results limit.


Seems to me it's this API call:

That also explains why the range switch has no 
effect, the distance is fixed in the call.

There's another call in ui/FragMap, but that's 
fixed (some init/default maybe).

I'll try to change the maxresults parameter, but I 
first need to get a working Android development 
environment -- haven't developed Apps up to now.

Maybe the maxresults parameter should be user 


Am 12.01.2015 um 01:57 schrieb Christopher Cook 
(Open Charge Map):
> Hi Michael,
> I'll download the code for the app from github 
> and have a look, I haven't developed any of the 
> OCM integration myself and I think (certainly in 
> the case of iOS, not sure about Android) that 
> 3rd party developers were paid to deliver the 
> integration. Presumably then the hope is that 
> the community will refine their efforts via 
> github - I'm assuming the path is very much 
> clear for enthusiastic developers to submit 
> patches for these apps directly. I can help more 
> on integration questions like calling the OCM 
> APIs etc (such as your filtering question). I've 
> held off contributing directly to the apps 
> because I'm limited for time with OCM and other 
> projects.
> If I find a simple fix for the API request to 
> OCM I'll submit a pull request to github.
> For the example you've given, where is the 
> center of your search (lat/long if possible)? By 
> default the app is search from your current 
> lat/long with a radius of 285 KM, max 500 
> results. Is it possible there are more than 500 
> charging locations in your search area?
> Best regards,
> Christopher Cook
> Open Charge Map
> On 12/01/2015 00:36, Michael Balzer wrote:
>> Hi Christopher,
>> I first posted this on the OVMS developer list 
>> (I'm the Twizy developer). J-C Saint-Po told me 
>> to forward this to you:
>> I'm missing about 80% of all OCM charge 
>> stations on the OVMS map display (Android).
>> I cannot find any criteria in the station data 
>> for this effect. Example:
>> visible: 
>> http://www.openchargemap.org/site/poi/details/32598 
>> missing: 
>> http://www.openchargemap.org/site/poi/details/32607 
>> Both stations are from the same provider with 
>> identical capabilities.
>> The connection filter does not affect this, 
>> neither does the range filter or clustering.
>> Also the detail info on visible points is wrong.
>> See attached screen shots for the map label and 
>> detail info on #32598 as shown in the App.
>> If I can help by more examples, tell me.
>> This is no new issue, has been this way from 
>> the beginning.
>> I just decided to add some missing stations 
>> from my region and then discovered they are not 
>> really missing in the OCM database.
>> Regards,
>> Michael

Michael Balzer * Paradestr. 8 * D-42107 Wuppertal
Fon 0202 / 272 2201 * Handy 0176 / 206 989 26

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