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For more infomation >> How to draw Peppa | Pig Peppa Pig the Good Fairy Coloring Page | Coloring Sky Video For Kids - Duration: 11:35.

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For more infomation >> whatsapp funny videos - whatsapp videos download - whatsapp viral videos - Duration: 18:09.

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For more infomation >> !! The Most Amazing Video Ever !! - Duration: 0:03.

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99 తో ప్రైమ్ రిజిస్ట్రేషన్ చేసారా? అయితే ఇలా చెయ్యండి ! EVERY JIO PRIME MEMBER MUST DO THIS !!! - Duration: 2:21.

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For more infomation >> 99 తో ప్రైమ్ రిజిస్ట్రేషన్ చేసారా? అయితే ఇలా చెయ్యండి ! EVERY JIO PRIME MEMBER MUST DO THIS !!! - Duration: 2:21.

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Video 13 - how to create a hillside shaded image from a DTM - Duration: 14:34.

We can also make a hillshade with lastools

So, let´s make a hillshade of the entire area of the terrain

with a tool we have't used before

and that tool is very scaleable, it can process a lot of points

I told you before, most of the time we need 20 million points

that is sort of a maximum

but there is

one tool

or two tools

which are very scaleable

and that is called the blast extention of the lastools

and that is fairly based on the post doc work I did in Berkeley

it is based in the streaming TIN technology

that is, I think, unique to lastools

sol it is called blast2dem

so, if you open that

it looks very similar to las2dem

it is actually almos identical

except it can handle up to two billion points

instead of twenty million

so, that is quite a difference

so, what we can do now

we can load in all the ground points

of the entire area

and make one big seamless raster

and the question is now

if we load and merge all tiles into one

which input should we now use?

we have all these inputs here

... "las tiles final" ...

exactly

and why?

because we don't want buffers anymore

we are using all the points now

because we don't have seams

we make a seamless TIN

that means

we are using all the points we have

there won't be ... you k now

the dough is the entire area

and there is only one cookie and it's the entire area

so, there won't be any seams to worry about

if you would use the buffers

the buffered tiles, you would use double points

in the buffer areas and some of those

and some of those points are really not good

so,

I use the final tiles as input

and I only use

for making a DTM

I only use the ground points

I keep classification

2

yeah, I use the las tiles final

without buffers, but with all the classifications

I don't need to worry with noise points

because I am only using the ground points

I am making a DTM

we are merging them all into one

so,

this you can't do with las2dem

las2dem will crash if you do that

because it runs out of memory

but blast2dem can handle all the points

from all these files in one process

and then we output

and we output

well, what do we actually output?

I want now

to create a hillshading, directly

we already have our DTM

that we can compute on

we created it at the tile base

now, I want the one I can look at

also let's kept a quality check

I was recomending you, after computing a DTM

make a hillshade of the DTM and look it over

make sure you don't have any

cut off mountain tops

or you don't have any buildings still inside

your data, because

if you then normalize

you don't notice it afterwards anymore

because then the DTM is gone

but, what you will have

you will have the wrong heights

in all the areas where you made a mistake

if you cut off mountain tops

then the trees of the mountains

will be too large

because the terrain is lower

than it really is

if you leave in buildings, and the buindings have

trees over them

then you will

make those trees short

because the terrain you use for normalization

is higher then the real terrain

so

and the hill side shading is a very easy way for the human eye

to make a quick check for mistakes

you now my favorite output format for

hillside shading is the png format

because it does blaze nicelly in google earth

and the file name I want to call it now DTM

maybe ... underscore ... hillshade

dot ... p n g

and I want to put it in the directory

that I know ... if you don't specify a directory

sometimes, you don't know where your data ends up

sometimes, it is in the big folder

sometimes, it is in the last folder you visited

it is always good to specify an output directory

so, I will put it in the main folder

because it is the entire area

I will put it right here in this folder

... use current ...

Now, let me think: have I done everything?

I merged everything into one

so, there is no point on running on multiple cores

it will be one process that reads one tile after the other

I am outputing it

into that directory with that name

oh, the stepsize

yeah, I want again to have

half a meter step size

that is nothing here, like use tile bounding box

because, we are using all the points now

and the bounding box will be decided by how ever big all the points are

of course, you could specify

directly something you want to cut out

but we didn't talk about that yet

these are advanced options you always can find by reading the README file

I think that is everything I need to do

I press RUN and review the command line

very important now is this merge

so, they are all getting merged into one

I got these merged by clicking this check botton here

merge files into one

the input is all the files final

I only keep classification 2

and I have a step size of

half

a meter

Now, half a meter is much coarser than the data we have

we can god down to 25 centimeters

if you wanted to

buy then we create a really big image

and we want to display that in Google Earth

and we don't want to kill Google Earth

so

ok

START

this is done

I now have

somewhere this DTM

and because we have projection information we created a

KLM file

key m

key markup language

KML

... Daniel ... apaga um pouquinho a luz aqui da frente

"turn the lights here up front"

and here we go

voilá

there is our

CHM

and now you can do a quickly

a quick tour

and see if it looks reasonable

ah, look here some Paraguayan tank positions

I don't know what those are ... but

maybe some diggings for

ponds or ... I don't know

and you see how it becomes less

less detailed under dense canopy

so, if I now turn that off

I should

I should see that this is a natural forest here

and I got very little penetration

where if this is fake plantation forest here

is like

is not there

for the laser

I guess

lots of returns from the ground

see that

under the

under the plantation forest

and

in the open area here, are there lakes?

that is a lake?

it looks very different

but then it becomes very fuzzy in the

in the natural vegetation

which is very very dense and doesn't let light goes thru so much

so, what we could now do ... we could also compare

the ground classification of las tools

to the original ground classification

that would be interesting

you know, we got the original ground classification from the vendor

we haven't used it in a long time

because we read it everything

let's see what that look like

so, let's start ... unfortunately I ...

I stopped my tool, so I have to start it again

same thing, blast2dem

I browse to Brazil, and now I load the raw data

the very very raw data, the one we started with ...

raw

and I am loading all those

and I do the same thing again

I filter the ground returns

ah, this is a very risky business here for me

because I am comparing in front of 50 people, live audience

my software directly against some other software

and I haven't done it before hand

so, maybe, the other software is way better

ah ...

the output

I choose the same output folder

but I give it a slightly different name

so, I'll put it right next to this one

in the main

2013 folder

and I'll give it a name, called

D T M

orig ... like original

hillshade dot PNG

same step size, of course, that will be fair

we also merge into one, so we should not have a boundary problem

we again do a hillside shading

and the outpput should be PNG

this time, of course, in order to look at them side by side in Google Earth

we need to add the projection again

because we don't have the projection

so

do we still know our EPSG code

ok, I'll have to fix it ... I will use

I will use some EPSG code and I will repair it

in the last moment

this is a EPSG code from ILM's, but ... oh, well

we'll just change it in the command line

ok, quick review, we loaded the raw data

we merged all into one

we put it in the 2013 folder

gave it a different file name

step size half a meter

hillside shading

PNG output

and I added EPSG code

as the projection

so, we create a KML file that put it at the right place

now, I should not forget to fix this EPSG code

let me do it first

somewhere epsg

and put the right number now

3 1 9 8 3

31983

everythind else

looks good

... hillshade, elevation, step too, keep classification too ...

... list of files should be the raw files

... merged ...

OK

START

For more infomation >> Video 13 - how to create a hillside shaded image from a DTM - Duration: 14:34.

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For more infomation >> Cara Bakar Lemak ( Burn fat ) - Duration: 2:02.

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How to draw Peppa Pig | Peppa Pig play balloon Coloring Page | Coloring Sky Video For Kids - Duration: 9:53.

How to draw Peppa Pig | Peppa Pig play balloon Coloring Page | Coloring Sky Video For Kids