topic Re: How to do labelling with AGSUniqueValueRenderer? in ArcGIS Runtime SDK for iOS Questions

How to do labelling with AGSUniqueValueRenderer?

c_f_ong — Fri, 09 Mar 2012 14:41:37 GMT

Hello

I can set labelling in AGSSimpleRenderer as follows:

AGSCompositeSymbol *composite = [AGSCompositeSymbol compositeSymbol];
AGSTextSymbol *textSymbol = [AGSTextSymbol textSymbolWithTextTemplate:@"${pointID}" color:[UIColor redColor]];
[composite.symbols addObject:textSymbol];
AGSSimpleRenderer *renderer = [AGSSimpleRenderer simpleRendererWithSymbol:composite];

However, I've a problem to do likewise with AGSUniqueValueRenderer. Any clue on how to do it?

Thanks.

Rgds
Ong CF

Re: How to do labelling with AGSUniqueValueRenderer?

NimeshJarecha — Fri, 09 Mar 2012 15:31:23 GMT

Ong CF,

In the case of Simple Renderer, there is only one symbol so you created one composite symbol. In the case of Unique Value Renderer, it depends on how many unique values are there. Suppose there are 5 unique values then you will have to create 5 composite symbols (simple symbol + text symbol) for each.

Please refer Working with Symbols and Renderers doc.

Regards,
Nimesh

Re: How to do labelling with AGSUniqueValueRenderer?

c_f_ong — Sat, 10 Mar 2012 00:31:55 GMT

Hi Nimesh

Thanks for your reply & I've got it to work now as follows:

// Create AGSUniqueValue objects
AGSUniqueValue *stn = [[AGSUniqueValue alloc] initWithValue:@"STN" label:nil description:nil symbol:composite];

Another query: What is the 'label' in the above statement used for? Thought it's for 'labelling' the symbol as what I had wanted to do. Also, how is the 'description' being used?

Thanks.

Rgds
Ong CF

Re: How to do labelling with AGSUniqueValueRenderer?

NimeshJarecha — Mon, 12 Mar 2012 16:00:27 GMT

Good to know that you got it working now. The 'label' is basically a name of the symbol and 'description' is the description of the symbol.

Regards,
Nimesh

Re: How to do labelling with AGSUniqueValueRenderer?

DeniseKing — Tue, 13 Mar 2012 12:29:16 GMT

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