關於 elevation altitude ，我們在網路上蒐集到這些相關的討論、資訊與評價

“Remember to bring snacks” ... yes. Food is all I think about. LOL.

If there’s something else that @joelebosi loves, it is mountains and volcanoes.

Mauna Kea is a dormant volcano and is the highest peak in the Hawaiian islands.

When measured from its oceanic base, it is the tallest mountain in the world rising to 13, 796 feet above sea level.

Our tour guide Bear of @arnottslodgeandhikingadventure , was very patient, informative and entertaining. Plus, he was an expert driving us up to the summit safely and in comfort inside his 4wd (some roads were really bumpy and steep!).

We took a break at Mauna Kea’s Visitor Information Station (VIS) to acclimatize to the higher altitude and to cover up. It was getting really cold and windy, and was told, once the sun sets, temperatures would go down drastically more.

With its high elevation, dry environment and stable airflow, Mauna Kea’s summit is one of the best sites in the world for astronomical observation. Azmi felt a bit light-headed upon reaching the summit (which I found out much later), but after a few deep breaths, he was feeling better and propped his camera gear ready to capture the sunset (which was breathtaking to say the least).
It occurred to me now, how different people react to higher altitudes.

I felt a sense of calm here – read up much later that in Hawaiian mythology, this place is very sacred and highly spiritual. I did some meditation and once the sun set, we drove back down to the VIS.

Clocking in at the 9,200 elevation, the VIS provides one of the world’s best places to view the entire expanse of the night sky. Bear then took us to a spot, just a walking distance from the parking lot after we had our hot chocolate drink, to gaze at the stars.

Unlike my starry-eyed husband, I lacked knowledge in the milky way but I enjoyed the experience nonetheless.

#visitislandofhawaii
#VacaywithAirAsiaX
#AirAsia
#HawaiiExperienceTheDream
#MYHawaiiStory
#GoHawaiiSEA
#BbbHawaii50
#Bediful50
#BedifulTrip
@GoHawaiiSEA

Photo with the champ here.
Men's Champion - 28:07 min
Women's Champion - 31:54 min
Meanwhile my timing - 31:43 min. 11 seconds ahead of the Women's Champion.

Distance clocked: 8.62km
Pace: 3:41 min/km
Elevation: 1936m (min), 1972m (max)
Avg Temp: 10°C

Not sure whether I will be in Top 10, hopefully I will. Meanwhile, they only announced the Top 3, others have to wait until end of the event.

A tough race against the China Long Distance Runners, the first four are from their National Team. KunMing is where they based and training, as this place is >1900m above sea level, 3 - 15°C.

Not easy racing at altitude and especially running 2 loops of 4.3km. Second loop had to zigzag-ing around the runners as there is a shorter distance category, which they did only one loop.

Running alone most of the time as being left out in the first km. They were shooting at a pace of 3:03 min in the first km, meanwhile I clocked a 3:16 min. I was at 11th position I think. During the second km, one runner overtook me and he went off with a fast steady pace. Thankfully there were hills, that's where my strength is, took down 2 runners in the first loop.

When comes to the second loop, I got overtook by two runners in the last turn towards the finishing line, they went early together, a gap of 10m between me and them. Eyeing on the finishing line, I dig deep, closed the gap down to 1 - 3m and that's it. Didn't manage to overtake both of them in the end.

Anyway, a good experience racing here. One of the runner recognized me from ChongQing Towerrunning Race where I won it. He got 7th position today. Well done to him!

Catch you guys later.

#LoveRunning538 #KunMing #ChinaRoadRace @ Kunming, Yunnan

What Are Ground Control Points (GCPs) and How Do I Use Them?
A Guide to Using Ground Control Points with Drone Mapping Software
If you work with drone mapping software, you’ve no doubt heard talk of ground control points (GCPs). Used often in the surveying industry, as well as in virtual design and construction, GCPs greatly increase the global accuracy of drone maps. Although they are not necessary in every situation, GCPs are a vital tool for precision mapping. But what exactly are ground control points? And how do you go about using them correctly?

To help crack the code on ground control points, we’ve put together this short guide to using GCPs with drone mapping software.

What Are Ground Control Points?
So what exactly are ground control points? Ground control points are large marked targets on the ground, spaced strategically throughout your area of interest. If you use ground control points with your aerial map, you first need to determine the RTK GPS coordinates at the center of each. (We’ll explain how to do this a little later.) The ground control points and their coordinates are then used to help drone mapping software accurately position your map in relation to the real world around it.

It might be helpful to think of your GCPs as a series of thumbtacks placed on your drone map. Because the drone mapping software knows the exact location of each of these “thumbtacks”, it can reference their locations when it matches up all of the other points on the map.
When and Why Are GCPs Important?
When used correctly, ground control points greatly improve the global accuracy of your drone map. That is to say, they help ensure that the latitude and longitude of any point on your map corresponds accurately with actual GPS coordinates. This is important in situations where precision mapping and true global accuracy are needed. As we mentioned above, surveying companies generally use GCPs, because a high level of global accuracy is important in most of the work that they do. Virtual design and construction is another sector that often requires this level of precision drone mapping.

Landpoint, a surveying company based in Louisiana, uses ground control points when creating drone maps used for topographical surveying. Using GCPs on an 85-acre map, their team conducted an accurate aerial survey, saving over 80 man hours compared to traditional land survey methods.

Each drone mapping project is unique, and not all projects require a high level of global accuracy. Because of this, it is important to assess each project individually before you decide to take the extra step of using GCPs. But generally speaking, projects like geo-referenced overlays, design documents and land title surveys benefit from the use of ground control points. In an upcoming post, we’ll take a deeper look at which types of projects are best suited for using GCPs.

How to Construct a Ground Control Point
There is no one right way to make a ground control point. One important thing to remember is that the GCP must be easily visible in your aerial imagery. This is achieved by using high-contrast colors and by making sure the ground control point is large enough to be seen from your particular flight altitude. We generally recommend flying at 300 feet with a frontlap and sidelap of 70/75 when using ground control points. Keep in mind that this may change dependent upon the area you are mapping. Learn more by reading our recent post about mapping accuracy and reviewing our GCP support documents.

A number of companies do sell pre-made, portable ground control points. However, many drone users simply fashion their own.
This well constructed GCP was spray painted onto the concrete using a stencil. Notice that the marker is large enough to be visible from far away. A center mark helps eliminate any confusion as to where the center point is located.

If you’re unable to mark GCPs with paint, there are a variety of low-cost ways to make markers with items available from any local hardware store. The weather-resistant rubber and vinyl markers seen above end up costing about $5 each and are very durable.

Measuring the Location of Your GCPs
As we mentioned above, it is important to measure the GPS coordinates at the center of each ground control point. To do this, you need either a Real Time Kinematic (RTK) or Post Processing Kinematic (PPK) GPS receiver. Trimble and Leica products are commonly used for high-accuracy GPS measurements. New, lower-cost alternatives have recently come onto the market as well. Hiring a surveyor to measure the location of your ground control points is also an option.

Do not use a phone or tablet to measure the location of your ground control points. The accuracy of these devices is very similar to that of a drone’s onboard GPS system and will not deliver precise results. Instead, use one of the previous methods listed above, such as an RTK or PPK GPS receiver.

Best Practices for Using Ground Control Points with Drone Mapping Software
Of course, if you use ground control points with drone mapping software, it is important to use them correctly. Follow these best practices to help ensure your GCPs serve their intended purpose and improve the accuracy of your map.

Use a minimum of 4 large GCPs: DroneDeploy requires a minimum of 4 ground control points. Each should measure at least four feet. No more than 10 are usually needed for larger maps.

Evenly distribute your GCPs on the ground: For most maps of moderate size, we recommend 5 GCPs, one located near each corner and one located in the center, as pictured above. Also, make sure GCPs are spaced far enough apart, to avoid confusion. As a general rule, if you can see more than one GCP in an image, they are too close together.

Create a buffer zone around your map’s perimeter: We recommend a buffer zone between the edges of your map and any ground control points. This ensures there is enough image coverage to carry out reprocessing. The size of your buffer zone should be somewhere between 50–100 feet, depending on the overlap of your flight. A higher overlap produces more images and generally requires less buffer zone.

Be aware of elevation changes: If the area being mapped has noticeable elevation changes like hills, mines and valleys, make sure to place at least one ground control point on each of the different major elevations.

Make sure your GCPs are unobstructed: Visual obstructions like overhangs, snow, shade or glare make ground control points difficult to identify on your drone map.

Know Your EPSG code: Before processing your map in DroneDeploy, you must enter the EPSG code that relates to your GPS measurements. Choose your EPSG code by modifying the settings of your GPS measurement device. In most cases, we recommend using WGS84 (EPSG: 4326).

#BorisFoong #RamseyWestwood #StellarRadio

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TRACKLIST :
00:00:00 Stellar Radio Intro
00:02:22 Full Effect - Maxim Lany feat. Penny F. [Armada Electronic Elements]
00:03:53 Illusion - Shapov & Nerak [Armind]

LOOKING BACK:
00:08:27 All We Need - ALPHA 9 [Armind]

00:10:45 Rapture - Kryder x Natalie Shay [Black Hole Recordings]
00:14:18 Anytime - 2sher, Paul Ercossa, Sunflare [Phatclub]
00:17:04 Technology - Kato [Kato Music]
00:19:24 Jonson's Play - Armin van Buuren & Sander van Doorn [A State Of Trance]
00:24:06 King's Tech..! - Ahmed Helmy [Suanda Music]
00:27:06 Tokio Lights - KeyWork [Azima Records]
00:31:18 Andromeda (Denis Sender Remix) - NyTiGen & Trance Reserve [Neostatics Sounds]

SOUND OF TOMORROW:
00:34:00 Vision - Key Lean & Sean Ryan [Find Your Harmony]

00:37:54 All I Need - Milad E, Andy Kumanov [Interplay Records]
00:42:07 Exploration of Self - Eximinds [AVA Recordings]
00:45:03 Reality (Concrete Panther Remix) - Vertruda [Addictive Sounds]
00:47:31 Fallen Angel - 2sher & ion.B [Phatbull]

CLASSIC PICK:
00:51:24 Somewhere (Clear Blue) (Perry O'neil Remix) - Markus Schulz Pres. Elevation [Armada Electronic Elements]

00:54:50 Apocalypto - Eldream & Mark Wild [Suanda Base]
00:58:35 Hear Them Echo - Voolgarizm, J-Stranger feat. Caitlin Potter [Reaching Altitude]
00:59:51 Memoirs - Orjan Nilsen pres. DJ Governor [A State Of Trance]
01:03:23 Forever - Hypersia & Matt Hiller [Full On 140 Records]
01:05:51 Contagious - ReOrder & Jordan Tobias feat. Clara Yates [A State Of Trance]
01:07:05 Burning Souls - Double Motion & Ruslan Asсhaulov [Trancemission]
01:09:51 Virus - Fading Light [Electro Beat Records (Promind)]
01:12:58 Mysterious Feeling - Adam Taylor [Suanda True]
01:16:24 Karma - Lies & Sinwaulam [CDR]
01:18:56 No Other Alternative - MaRLo [Central Station Records]
01:21:40 Bangkit - Sinwaulam [CDR]
01:25:00 Leonie (Alan Morris Remix) – DJ T.H. [AVA White]
01:29:02 Stellar Radio Outro

FORMOSA TRAIL 福爾摩沙古
main loop with my wife Eva Lobo. This course is maintained by Petr Novotny and @Beast Runners 跑山獸 since 2015 for Formosa Trail trail running event. This main circle is 22km long with significant elevation gain of 1700m. Average trail runner need 6 hours as we did, however average hiker should count with 10 hours.


This course is mid-altitude mountains on east from Puli 埔里. Course is beautiful with pleasant forest and several views. Even during hot summer day temperature in this forest is nice. All course is single track with several challenging parts, last 6km are downhill on concrete road.

Formosa Trail 福爾摩沙古
event is held every year last weekend of November and runners participate in 16, 40, 75 and 104km with start in Solas Hotel 天泉溫泉水 on Liyutan lake 鯉魚潭. Formosa Trail is very popular trail running event among overseas runners from Japan and Hong Kong.

If you go explore never forget to have GPS (with uploaded GPX) and all equipment and food and water for whole day.
Map (can download GPX): https://en.mapy.cz/s/jarobazazu

Course descripton:
青山橋 (600m)
板仔寮 1380m
舊武界越山 1668m
武界越山主峰1524m
武界越山南峰 1575m
獅凸魯山 1587m
武界山 1500m

additional mountains nearby:
界越山 1507m
橫屏山西峰 1442m

Formosa Trail: http://www.formosatrail.com/
Beast Runners 跑山獸 : https://beast.run/shop
#跑山獸
#beastrunners
#formosatrail

Music from Uppbeat (free for Creators!):
https://uppbeat.io/t/torus/tonic
License code: DUTO6D1RTPCSQTNN

รีวิว Casio Pro Trek F20A นาฬิกาที่แข็งแรงที่สุดจาก Casio ผ่านการทดสอบระดับเกรดทหาร

Casio Pro Trek F20A เปิดราคาเมืองไทย 14900 บาท เท่านั้น สามารถไปชมตัวจริงได้ที่งาน International Watch Fair วันที่ 21 สิงหาคม 2561 - 30 กันยายน 2561 นี้ ที่เซนทรัลชิดลม กรุงเทพมหานคร

Wear OS by Google™
4 GB internal memory
512 MB RAM
512 MB of RAM available.
Wi-Fi (IEEE 802.11 b/g/n)
Bluetooth® Smart
Super-Illuminator
MIL-STD-810G compliant
The MIL-STD-810 is a U.S. military technical standard that specifies environmental test conditions for military equipment. The standard defines tests for the compatibility of equipment and devices with extreme temperatures and air pressures, solar radiation, humidity, chemicals, acceleration forces and vibrations.
Smartphone time
Double LCD (320 x 300)
Touchscreen
Sunrise/sunset display
Fishing Timer
A special sensor measures the air pressure (measuring range: 260/1100 hPa) and presents this on the display in the form of a symbol. This enables early detection of weather trends.
Digital-compass
A built-in direction sensor detecs the magnetic north.
10,000 m Altimeter
A pressure sensor detects changes in the air pressure and converts the result into an altitude up to 10,000 m.
Altimeter data memory
Depending on the model, up to 40 sets of elevation data can be stored in the watch's data memory and re-accessed at any time. Each of these data sets consists of a measured altitude as well as the date and time. In addition to the individual altitudes, the maximum and minimum altitudes during a measurement are also stored.
Moon Phase Indicator
The moon phase indicator shows the current moon phase based to the earth
Tide indicator
Once the high tide time has been entered for a selected location, the watch can display the low and high tide phases at this location on any given date. This can be quite useful, for example, if you want to know the patterns of the tides at your destination in advance.
Gyrometer
Ideal for outdoor activities: The gyro sensor shows you every little change in direction during navigation, ensuring you always reach your destination. The sensor detects the smallest movements of the watch and acts against this by supporting optical image stabilisation or the alignment of the display.
Acceleration sensor
The motion sensor responds to acceleration and shows this as a speed on the display. The sensor also supports the auto rotation function of the watch, ensuring that the image is always displayed the right way up on the display.
GPS function
Measures your current position using artificial satellites circling the globe.
World time function
Displays the current time in major cities and specific areas around the world.
Daily alarm
The daily alarm reminds you of events that recur every day, by emitting an audible signal at the set time.
Snooze feature
Each time you stop the alarm, it sounds again after a few minutes.
Vibration alert
The vibration alarm discreetly reminds you of important appointments, without emitting a loud signal.
Airplane Mode (Offline Mode)
At the touch of a button, the watch switches to offline mode. This means that you can disable the wireless or GPS receiver when in the air for the duration of the flight.
Microphone
Make your daily life easier using practical voice commands spoken directly into the microphone on your watch. For example, you can start a Google search by saying "OK Google" — without the need to touch the display, or even take your smartphone out of your pocket. Many actions can be performed via the microphone using voice commands.
Mineral glass
The tough mineral glass resists scratching.
Resin case
Resin band
Synthetic resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties.
Battery level indicator
An indicator shows the current battery level.
Water resistance classification (5 bar)
This watch can be worn when showering and bathing - it is tested for water resistance up to 5 bar according to ISO 22810.
Dimensions (H x W x D)
61,7mm x 57,7mm x 15,3mm
Weight
approx. 90 g
Availability of models and/or lineups may differ depending on the country or region.
Technical amendments and errors excepted. The sizes in figures do not correspond to the original sizes.
The colours may differ slightly from the original.
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