Advertisements

An original point of view

GIS, Panoramas

Using Heywhatsthat.com to generate a multiple summit-perspective views in Google Earth – part 1

Rysy and Giewont Heywhatsthat.com visibility cloak shown in Google Earth

Rysy and Giewont summits (Tatra Mts) Heywhatsthat.com visibility cloak shown in Google Earth.

 

Google Earth has been widely used in geography and GIS. Previously I showed you how to simulate a flood and total solar eclipse path in this tool. There are not only things, that I am going to show you over the forthcoming months. First of all the Google Earth is one of the programs, that I have been using at work so every time when I open and work on this instrument the new ideas come.

The aim of this article is a demonstration of the multiple summit-perspective views in Google Earth. Those long-distance views are to be created in Heywhatsthat.com panorama generator.  If you are interested in mountain hiking, long-distance views, land surveying or spherical astronomy you may have known, that panoramas, that are generated in the Heywhatsthat server can be used in Google Earth also.

Probably you have already found in the web some articles about this, however, I can show this process roughly step by step for you. Moreover following the main topics I am able to show you how to show more than one summit-perspective view using the Google Earth tool. I will provide examples from the Tatra Mountains (Carpathian range, Central Europe)). There are mountains, that I am familiar with.

Heywhatsthat.com can provide the map with a visibility cloak feature, that enables users to find out exactly which areas would be seen from a summit during the best conditions. It also allows us to set the refraction value.

Getting the panorama in Heywhatsthat.com

Generating the panoramas in Heywhatsthat.com is quite straightforward. Once you open the website you must look at the top bar, where the very basic options are to be found. To generate your own panorama from the summit, that you are interested in select the “New Panorama” button (Pic.1).

Heywhatsthat.com top toolbar

Pic. 1 The Heywhatsthat.com top toolbar with the “New panorama” option.

Your next step should be marking the rough place (summit) on the map (Pic. 2, No 1) and fill up the brackets on the left of course (Pic. 2 No 2 – 5). It is always better to put a metric scale rather than English when you are not clued up with a feet scale. You can change it at the foot of the screen under the map.  The website will remember this option when you open again. Point 2nd on your left has been set automatically so you shouldn’t worry about it. Basically, it allows you to move to the highest nearby point to ensure a 360deg view. This option is good, because not always you will be able to pinpoint your summit correctly.
Now is the time to specify your elevation. For my case it was a Giewont summit – the highest summit in Western Tatras, that whole lies in Poland. The Giewont peak rises up to 1909 m.a.s.l. After the value, it’s good to put the name of your panorama in point 4 brackets, although you don’t need to.
When you are sure, that all details have been correctly put in the brackets you must click the “Submit” button (Pic. 2, no 6) and wait for a while.

Heywhatsthat.com new panorama

Pic. 2 The Heywhatsthat “New panorama” creator with all relevant steps.

Excellent! Our panorama has been generated after tens of seconds. Now we can see our red visibility cloak, that spreads far out from the summit (Pic. 3,4). On your right you are able to see the most prominent peaks, that can be covered when you are on the top (Pic. 3).

Heywhatsthat.com panorama from Giewont, Tatra Mts.

Pic. 3 A newly generated panorama from the Giewont summit with nice visibility cloak (marked red) and a list of main peaks on the right.

Heywhatsthat.com panorama from Giewont, Tatra Mts.2

Pic. 4 A newly generated panorama from the Giewont summit with visibility cloak (marked red) and horizon pattern, that is to be seen when you are at the top.

Having this panorama ready you can zoom in & out to gain the perspective as you want. Taking into account the buttons on your top right you are able to adjust this panorama for your needs. I always choose 3 of 5 buttons: “Horizon”, “All summits” and “Visibility cloak”. You can follow me, making them active. Finally, You will gain a view as per as above (Pic. 4). As you may have noticed the “Horizon” button can help you to determine the furthest possible view, whilst the visibility cloak seems to be really faint.
Making all buttons active you must be aware to have a lot of details of your new panorama (Pic. 5). For instance, when select “Contours” you will see the main contour levels, that display you the local land features. I think, that the more important button is “Up in the air”, that can calculate how far is your summit would be visible when you are hunged up in the air. It may be useful in flightseeing, to check the probability to see you summit from a certain flight route. There are 2 variables, that you can set manually. I put 10000 m for one (orange) and 36000 m for another (blue) (Pic. 5). The first case represents the view range for the typical plane altitude (10 km above ground), a second one represents the view range for 36 km altitude in terms of the meteorological balloon maximum altitude. In general looks interesting (Pic. 5).

Heywhatsthat.com panorama from Giewont, Tatra Mts.3

Pic. 5 A newly generated panorama from the Giewont summit with all buttons active. It may be interesting, that Giewont technically is to be seen e.g. above Prague (flight altitude) and even above Bornholm (meteorological ballon).

Transfer the panorama to Google Earth

Let’s go to the main issue in this topic, namely how to manage the Heywhatsthat long-distance views in the Google Earth tool.
First of all, once you generate your panorama on the top right you have a few options, that allow you to manage your generated view (Pic. 6). To receive it as a .kmz file you have to select the “View in Google Earth” option. Remember, that it works for the “day” version (Pic. 7). Don’t put the “night” version, because your Google Earth will change into sky mode.

Heywhatsthat.com panorama from Giewont, Tatra Mts.4

Heywhatsthat.com view in Google Earth option

Pic. 6, 7 The “View in Google Earth” option in Heywhatsthat.com

Click on it and should be enough. Now you see the window, that allows you to save file or open it directly in Google Earth. Better to choose the 2nd option, however, if you wish to rename your file you can save it first.

Now we can enjoy a great view on Google Earth (Pic. 8). Everything has been literally moved from Heywhatsthat map (that is obviously Google map) to your Google Earth.

Heywhatsthat.com Giewont visibility cloak in Google Earth

Pic. 8 A newly generated panorama from the Giewont summit seen in Google Earth.

At first glance, everything looks quite messy. We have all layers active (Pic.9), that finally is to be adjusted for our needs.

Heywhatsthat.com Giewont visibility cloak in Google Earth layers

Pic. 9 All layers that consist of the Giewont summit panorama is to be seen on the left toolbar in the “Places” section as a last saved file.

For your panorama you will need only 3 layers:
– a purple cross, that displays your summit,
– visibility cloak outline, that draws the horizon pattern for you (fair purple line)
– visibility cloak, which is displayed as a red layer.
Eventually, a whole panorama should look as per as below (Pic. 10):

Heywhatsthat.com Giewont visibility cloak in Google Earth 2

Pic. 10 The Giewont summit panorama allocated on Google Earth.

At the finish of this issue one thing. Personally, I would rather change the visibility cloak outline color for another one. Initially, the fair purple is nice because it remains clearly visible against the satellite imagery.

To make simple amendments to your panorama you need to refer to the left toolbar again (Pic. 11). Find the “Visibility cloak outline” layer and right-click to pop up the command list and next select the “Properties“.
Heywhatsthat.com Giewont visibility cloak in Google Earth layer properties

Heywhatsthat.com Giewont visibility cloak in Google Earth layer edit color changes

Pic. 11,12 Changing the “visibility cloak outline” color on Google Earth.

In the picture above you can see all the properties of the “visibility cloak outline” layer. You are able to add some description, change the name, etc. The most relevant for you is “Style, Color” section, where you can change 3 things:
– color,
– width (2.0 is a default value, however, I do not recommend you to change it, because it will make your horizon pattern less readable),
– opacity (55% is a default value, to make your line strong put higher value e.g. 70%).
As you have noticed red squares located at the edges of the horizon line. They are visible when the “properties” window is switched and enables you to change the position of them. This is not recommended! Otherwise, your horizon pattern will not be valid anymore.
There you go!

Heywhatsthat.com Giewont black visibility cloak in Google Earth

Pic. 13 My Giewont summit view with a black visibility cloak outline is already done!

A multiple summit views in Google Earth

Now, when everybody knows how to put the Heywhatsthat.com into Google Earth with making some alterations we can proceed to a more advanced step, which is multiplying the panoramas.
The aforementioned solution has shown us how to put one summit panorama into Google Earth, though sometimes you need more than 1 summit located in the area of your study or check the visual opportunities to see some peas from a remote place.
Let’s back to the heywhatsthat.com website again. It remembers our Giewont summit panorama, when open again. We are creating a new panorama now, so there are exactly the same steps to encounter with another summit only.

Let’s take into consideration the Rysy peak this time. Rysy is the highest summit of Poland, situated in the south-east Polish corner of High Tatras. In general, the main Rysy summit is located just outside the Polish border and counts 4 m more, than on the Polish side – 2503m.a.s.l. We are going to consider it now.
Once you put another summit view into Google Earth you will have unfortunately a terrible mess on your area (Pic. 14,15).

Heywhatsthat.com Giewont and Rysy visibility cloak in Google Earth

Heywhatsthat.com Giewont and Rysy visibility cloak in Google Earth2

Pic. 14, 15 The Giewont and Rysy summit panorama overlapped on each other in Google Earth. Dark horizon range – Giewont, Purple one – Rysy.

Fortunately previously I decided to change the “visibility cloak outline” color, hence now both horizon patterns are quite recognizable. Nevertheless, the observer still would have problems with delimitation visibility of the nearer places, mountains or summits.
Pic. 15 clearly shows the visibility cloak overlapping, where both marked red are almost completely merged. Due to some transparency feature, we can try to point the areas,  from where both peaks are clearly visible (stronger red) or only one is to be seen (fainter red), but we don’t really know which one, right!?
To enhance our multi summit panorama we need to make some amendments to Google Earth. Let’s open the “Visibility cloak” layer in the left toolbar again (Pic. 16).

Heywhatsthat.com Giewont and Rysy visibility cloak in Google Earth toolbar

Pic. 16 The “VIsibility cloak” layer is available in the left toolbar.

Select this layer and develope the leftmost triangle to see all separate sections, that are included in the whole “Visibility cloak” layer (Pic. 17).

Heywhatsthat.com Giewont and Rysy visibility cloak in Google Earth toolbar2

Pic. 17 Once you open the leftmost triangle next to the tick mark the drop-down list of single layers becomes visible.

Now we need to right-click one by one and choose the “Properties” section (Pic. 18).

Heywhatsthat.com Giewont and Rysy visibility cloak in Google Earth toolbar properties

Pic. 18 The list of commands after the right-click for one of the layers.

The “Properties” includes a few options (Pic. 19). However, you have not a wide spectrum of things to change. Even if you can make some amendments like rotate view or stuff like that, they are not recommended. One option, that should bother you is a transparency level, located just under the link. Initially, this bar features around 60% of the opacity level (Pic. 19).

Google Earth opacity level option

Pic. 19 The opacity level option. When you move your mouse up there, then the command “Sets the transparency of the image overlay” is displayed.

Your exercise is changing this opacity level making the picture more transparent. Move your box then into the left (Pic. 20), and then just go OK.

Google Earth opacity level option2

Pic. 20 The opacity level option. Moving the box into the left will make your layer more transparent.

Now you need to repeat this task for every single layer down to the last one or at least for a few. Finally, you should get the whole “Visibility cloak” layer more faint in Google Earth (Pic. 22). Remember, that if your summit rises very high above the surrounding area it may have taken some time to load all pieces up (Pic. 21).

Heywhatsthat.com data loading in Google Earth

Pic. 21 Loading the Heywhatsthat.com data into Google Earth.

Heywhatsthat.com Rysy and Giewont visibility cloak in Google Earth, Podhale region

Pic. 22 The “Visibility cloak” layer for both summits Giewont and Rysy: 1 – only Giewont visible, 2 – only Rysy visible, 3 – both Giewond and Rysy visible.

As you see above this operation may help you to determine the visibility cloak area, nonetheless, the panoramas are still merged. When you put 1 peak more, the situation looks worse (Pic. 23).

Heywhatsthat.com Wołowiec, Rysy and Giewont visibility cloak in Google Earth, Podhale region

Pic. 23 3 peaks visibility cloaks merged: Wołowiec, Giewont, and Rysy.

Normal conditions against the refraction issue

To be fair the case described above is better to use when we would like to put the visibility cloak of our summit generated for normal conditions against the refraction. Admittedly heywhatsthat.com provides the option to calculate the refraction (Pic. 24), but it refers to the path profile only.

Heywhatsthat.com refraction calculation

Pic. 24 The refraction calculates option in the Heywhatsthat.com.

To make a simple calculation of the refraction and show it as another visibility cloak roughly from the same place you need to generate another panorama with the same summit as previously. One difference is, that you have to put a higher value rather than normal altitude. Don’t exaggerate with it! Average refraction may lift up your summit around 100 m (it happens very rarely, that due to refraction peaks are up to 150 m higher than normally).
Let’s consider the Łomnica peak as an example. This is one of the highest summit in the High Tatras (Slovakia) with excellent viewshed towards the east. I prepared a couple of snips of the Łomnica visibility cloak both in normal conditions and refraction. Let’s see.

Tatry z Góry Kamieńskiej Heywhatsthat.com

Pic. 25 The Kamieńska Mt. near Piotrków Trybunalski – the northernmost place, from where Łomnica peak can be seen in refraction conditions (market faint red).

Tatry z Lubelszczyzny Heywhatsthat.com i Google Earth

Pic. 26 The Salomin village near Kraśnik – the extremal north-east place, from where Łomnica summit can be seen in normal conditions and environs, where Łomnica peak can be seen in refraction conditions (faint red)(the furthest place – Rzeczyca-Kolonia village).

In any case, we need to take into consideration the local terrain features like vegetation and buildings likewise the overlaid of the hills situated on a line of sight. To make sure, that your visibility cloak will be more valid add up around 30 m to initial altitude of your peak.
Writing this advice I would like to round off this article. In the 2nd part, I will show you more options to manage the multi summit panoramas in heywhatsthat.com.

Mariusz Krukar

Links:
1. Heywhatsthat.com – probably the oldest virtual panorama generator.
2. Ogleearth.com – a few words about the heywhatsthat.com panoramas
3. Heywhatsthat in GoogleMapsMania.blogspot.co.uk
4. Heywhatsthat – more fun with maps
5. What is the maximum range I can get?

Films:
Heywhatsthat – multimedia guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Advertisements
Follow

Get the latest posts delivered to your mailbox:

%d bloggers like this: