Difference between revisions of "Visibility"

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{{#customtitle:Layer's state and transparency|Layer's state and transparency}}
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{{#customtitle:Layer's state and transparency|Layer's state and transparency}}  
  
=== Active Layer ===
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=== Active Layer ===
Only one layer can be 'active' at the Reference Panel, to see which layer is active it's name has a light-green background.
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To make active a layer, just click on it's name:
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[[Image:ggs0-3-1-01.png|Layer 'Fields (NRCS)' is the active layer]]
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In GeoAgro GIS, operations and commands are executed on the active layer, one of them is 'Rename a layer'
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Only one layer can be 'active' at the Reference Panel, to see which layer is active it's name has a light-green background. To make active a layer, just click on it's name<br>
==== Related articles ====
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[[Layers_Status_(invisible,_visible,_active)|Layer's status: invisible, visible, active)]]
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=== Layer's visibility ===
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[[Image:Ggs0-3-1-01.png|Layer 'Fields (NRCS)' is the active layer]]  
To make the layer 'Fields (NRCS)' unvisible, please click on the eye icon belonging to it and clear the visivility checkbox
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[[Image:ggs0-3-1-02.png|Changing the visibility of a layer]]
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The eye icon will change it's color to grey
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In GeoAgro GIS, operations and commands are executed on the active layer, one of them is 'Rename a layer'  
[[Image:ggs0-3-1-03.png|Visibility ON]] »» [[Image:ggs0-3-1-04.png|Visibility OFF]]
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And 'Fields (NRCS)' will not be visible on the map
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==== Related articles  ====
[[Image:ggs0-3-1-06.png|Fields (NRCS) hidden]]
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To make 'Fields (NRCS)' visible again, please click again on th eye icon and check the visibility checkbox.
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[[Layers Status (invisible, visible, active)|Layer's status: invisible, visible, active]]  
[[Image:ggs0-3-1-04.png|Visibility OFF]] »» [[Image:ggs0-3-1-03.png|Visibility ON]]
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And 'Fields (NRCS)' will be visible on the map
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=== Layer's visibility  ===
[[Image:ggs0-3-1-05.png|'Fields (NRCS)' visible on map]]
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You can also hide or show entire groups of layers, by clicking on the checkbox next to the group's name.
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To make the layer 'Fields (NRCS)' unvisible, please click on the eye icon belonging to it and clear the visivility checkbox<br>
[[Image:ggs0-3-1-07.png|Group's visibility ON]] »» [[Image:ggs0-3-1-08.png|Group's visibility OFF]]
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==== Related articles ====
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[[Image:Ggs0-3-1-02.png|Changing the visibility of a layer]]
[[Layers_Status_(invisible,_visible,_active)|Layer's status: invisible, visible, active)]]
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 +
The eye icon will change it's color to grey<br>
 +
 
 +
[[Image:Ggs0-3-1-03.png|Visibility ON]]&nbsp;&nbsp;»»&nbsp;&nbsp;[[Image:Ggs0-3-1-04.png|Visibility OFF]]
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 +
<br>
 +
 
 +
And 'Fields (NRCS)' will not be visible on the map
 +
 
 +
[[Image:Ggs0-3-1-06.png|500px|Fields (NRCS) hidden - Please click on the image to see it full size]]
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 +
<br>
 +
 
 +
To make 'Fields (NRCS)' visible again, please click again on th eye icon and check the visibility checkbox.<br> [[Image:Ggs0-3-1-04.png|Visibility OFF]]&nbsp;»» [[Image:Ggs0-3-1-03.png|Visibility ON]]
 +
 
 +
<br>
 +
 
 +
And 'Fields (NRCS)' will be visible on the map
 +
 
 +
[[Image:Ggs0-3-1-05.png|500px|'Fields (NRCS)' visible on map - Please click on the image to see it full size]]
 +
 
 +
<br>
 +
 
 +
You can also hide or show entire groups of layers, by clicking on the checkbox next to the group's name.
 +
 
 +
[[Image:Ggs0-3-1-07.png|Group's visibility ON]]&nbsp;&nbsp;&nbsp;»»&nbsp;&nbsp;&nbsp;[[Image:Ggs0-3-1-08.png|Group's visibility OFF]]
 +
 
 +
==== Related articles ====
 +
 
 +
[[Layers Status (invisible, visible, active)|Layer's status: invisible, visible, active]]  
 +
 
 +
=== Layer's transparency  ===
  
=== Layer's transparency ===
 
 
If you check the box next to a layer and it isn't drawing, it may be hidden by another layer.  
 
If you check the box next to a layer and it isn't drawing, it may be hidden by another layer.  
[[Image:ggs0-3-1-09.png|Orthophoto is covering the layers below it]]
 
On the image above all layers below 'Orthophoto' are hidden, and that is not because they are in 'Invisible mode' (please note that the eye icon is still orange)
 
The reason why they are not shown is because they are overlaid with an opaque layer, in this case 'Orthophoto'
 
  
For this reason, it's a common practice to order the layers following these tips.
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[[Image:Ggs0-3-1-09.png|500px|Orthophoto is covering the layers below it - Please click on the image to see it full size]]
  
* Point and Polyline layers on top.
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On the image above all layers below 'Orthophoto' are hidden, and that is not because they are in 'Invisible mode' (please note that the eye icon is still orange).
* Below them the Polygon ones (but you can always use hollow Polygons).
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* And at the bottom the Raster layers, such as Topographic maps (DRGs) and Satellite imagery.
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The reason why they are not shown is because they are overlaid with an opaque layer, in this case 'Orthophoto'
 +
 
 +
For this reason, it's a common practice to order the layers following these tips.
 +
 
 +
*Point and Polyline layers on top.  
 +
*Below them the Polygon ones (but you can always use hollow Polygons).  
 +
*And at the bottom the Raster layers, such as Topographic maps (DRGs) and Satellite imagery.
  
 
There's a second method to handle the visibility of layers, by adjusting their transparency level.
 
There's a second method to handle the visibility of layers, by adjusting their transparency level.
The Orthophoto currently has no transparency, you check that by clicking on the eye icon: you'll see that the level bar is at the top of the slide
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[[Image:ggs0-3-1-10.png|Orthophoto with no transparency]]
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The Orthophoto currently has no transparency, you can check that by clicking on the eye icon: you'll see that the level bar is at the top of the slide
 +
 
 +
[[Image:Ggs0-3-1-10.png|Orthophoto with no transparency]]  
  
 
Please drag the slide control a quarter down.
 
Please drag the slide control a quarter down.
[[Image:ggs0-3-1-11.png|Orthophoto with a quarter of transparency level]]
 
  
You'll notice that the above layers now are partially visible.
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[[Image:Ggs0-3-1-11.png|Orthophoto with a quarter of transparency level]]
 +
 
 +
You'll notice that the above layers now are partially visible.  
 +
 
 +
[[Image:Ggs0-3-1-12.png|500px|Layers partially visible - Please click on the image to see it full size]]
  
[[Image:ggs0-3-1-12.png|Layers partially visible]]
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To make them even more visible, just repeat the process lowering the transparency level until you're satisfied
  
To make them even more visible, just repeat the preocess lowering the transparency level until you're satisfied
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==== Related articles ====
==== Related articles ====
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[[Layers_transparency|Layers transparency]]
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[[Category:GGS0]][[Category:Exercises]]
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[[Layers transparency|Layers transparency]]

Revision as of 14:13, 22 January 2009

{{#customtitle:Layer's state and transparency|Layer's state and transparency}}

Active Layer

Only one layer can be 'active' at the Reference Panel, to see which layer is active it's name has a light-green background. To make active a layer, just click on it's name

Layer 'Fields (NRCS)' is the active layer

In GeoAgro GIS, operations and commands are executed on the active layer, one of them is 'Rename a layer'

Related articles

Layer's status: invisible, visible, active

Layer's visibility

To make the layer 'Fields (NRCS)' unvisible, please click on the eye icon belonging to it and clear the visivility checkbox

Changing the visibility of a layer

The eye icon will change it's color to grey

Visibility ON  »»  Visibility OFF


And 'Fields (NRCS)' will not be visible on the map

Fields (NRCS) hidden - Please click on the image to see it full size


To make 'Fields (NRCS)' visible again, please click again on th eye icon and check the visibility checkbox.
Visibility OFF »» Visibility ON


And 'Fields (NRCS)' will be visible on the map

'Fields (NRCS)' visible on map - Please click on the image to see it full size


You can also hide or show entire groups of layers, by clicking on the checkbox next to the group's name.

Group's visibility ON   »»   Group's visibility OFF

Related articles

Layer's status: invisible, visible, active

Layer's transparency

If you check the box next to a layer and it isn't drawing, it may be hidden by another layer.

Orthophoto is covering the layers below it - Please click on the image to see it full size

On the image above all layers below 'Orthophoto' are hidden, and that is not because they are in 'Invisible mode' (please note that the eye icon is still orange).

The reason why they are not shown is because they are overlaid with an opaque layer, in this case 'Orthophoto'

For this reason, it's a common practice to order the layers following these tips.

  • Point and Polyline layers on top.
  • Below them the Polygon ones (but you can always use hollow Polygons).
  • And at the bottom the Raster layers, such as Topographic maps (DRGs) and Satellite imagery.

There's a second method to handle the visibility of layers, by adjusting their transparency level.

The Orthophoto currently has no transparency, you can check that by clicking on the eye icon: you'll see that the level bar is at the top of the slide

Orthophoto with no transparency

Please drag the slide control a quarter down.

Orthophoto with a quarter of transparency level

You'll notice that the above layers now are partially visible.

Layers partially visible - Please click on the image to see it full size

To make them even more visible, just repeat the process lowering the transparency level until you're satisfied

Related articles

Layers transparency