Author Topic: What is the easiest way to select an object with the mouse?  (Read 1383 times)

roger

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What is the easiest way to select an object with the mouse?
« on: February 15, 2018, 11:13:40 PM »
Sometimes you may have difficulty in selecting objects with the mouse when they are very close together or when they are very large.

NoiseMap has many ways of selecting objects and you may need to try different methods depending on the situation.
The most common is to point the mouse at the object and then clicking. NoiseMap has different ways of showing when an object is selected: in the case of road, rail and route workings, the outline turns dotted and the end markers get a square around them. For buildings, the outline turns dotted and the fill turns purple.  In the case of contour lines, the end markers get a square round them and the line turns purple.  Also, if the properties box is open, then the object will be listed in the box. 

But which part of the object do you point at? Usually, it is best to point at an end marker.  But for large objects like buildings, NoiseMap locates the object at its centroid and it will be selected if you point at that.  This can cause confusion - for irregular objects the centroid may not be within the outline and when you try to select another object which happens to be close to that centroid, the 'wrong' object may be selected.

There are many techniques to get round the problem.
  • If objects are extremely close, you can ‘switch off’ the ones you want to avoid – either by clicking on the visibility (eyeball) icon and deselecting, or by going to View>Display Options and setting the ones you want to avoid to grey. They won’t then be selected.
  • Dragging around the end-point of an object is a more specific way of selecting than pointing and double clicking.
  • if objects are virtually overlapping, double clicking successively should cycle through the objects.
  • At the bottom of the Object Properties dialogue, there are forward and backward arrows that allow you to select the next object in the sequence
  • You can use the Find function if you can guess a particular property of the object, such as its ID number, height, etc
It is also worth remembering that selection accuracy is increased if you load a smaller area of the model.