PangYa: HWI method of counting

(i myself is not a good player, but i'm quite sure the method i'm using is pretty much accurate in calculating using HWI..)

STANDARD CALCULATION: let's assume we use the unit TILES for moving.. the equation goes like this..
TILES = Sin(angle) x windspeed x HWI

this is how we usually compute for our move.. it seems pretty much easy.. YES IT IS, that is for sidewinds and +2 -2 hole height..

for sidewinds(90degrees) with huge hole height like -20 -15 -10 +10 +15 +20, there will be adjustments made for your HWI..

NOTE: for a negative hole height, there will be an additional adjustment to your HWI..
            for a positive hole height, there will be a deduction adjustment from your HWI..

for a NEGATIVE hole height: from the original equation
tiles = Sin(angle) x windspeed x HWI will now be
tiles = Sin(angle) x windspeed x (HWI + a certain value)

for a POSITIVE hole height: from the original equation
tiles = Sin(angle) x windspeed x HWI will now be
tiles = Sin(angle) x windspeed x (HWI - a certain value)

NOTE: this certain value may differ depending on the hole height and the hole distance as ratio to your drive..

ok now that we're done with hole heights, will now go to WIND DIRECTION adjustment

wind directions: the face wind(downwards), and the tail wind(upwards)..[please correct me if i'm wrong]

NOTE: if the wind direction is upwards, we deduct a certain value from our original yards..
            if the wind direction is downwards, we add a certain value from our original yards..
            (this certain value depends on the angle and on the wind speed)

6m downwards will more likely give you an additional 4 yards to your original yards
6m upwards will more likely deduct 4 yards from your original yards..

it's a matter of trial and error, estimate how much to add and how much to subtract, and after doing so, you'll now have your final yards(hole distance) to pick your HWI..

after the hole height adjustment and wind direction adjustment, there's one more, the BALL CONDITION..

ball condition is where your ball lies, the tee, fairway, rough, bunker..
with 100% ball condition(tee and fairway), we don't do anything with our hole distance..
but with rough and bunker, we have to add a little yards to our original hole distance.. as to what they say, with rough (95% ball condition) we add 4 yards to our hole distance..)

if we landed on rough with a 214yard hole distance, so our final hole distance will be 218yards..

these 3 are the usual adjustment we use to get our so called FINAL HWI..

let's assume we have a situation of:
236yards
3m facing downwards(30degrees)
landed on rough
and a hole height of +10

and let's key in the values to the equation:

tiles = Sin(angle) x windspeed x HWI

tiles = Sin30 x 3 x HWI

since we don't have yet our FINAL HWI, let's go back to the situation we're in and follow what we discussed earlier..

yard is 236, we landed on rough, so we add 4 yards which will give us 240yards, we have a wind speed of 3 downwards, so we need to add a little value to that, let's say 1 perhaps.. so 241 yards.. now we have our final yard, we get the HWI of 241, let's assume it as .63

now we have our HWI, still we're not done yet, we still have the elevation adjustment, since we have a +10 height, i'll deduct my HWI with .03 because of the height, so which will give me the FINAL HWI of .6

now we go back to the equation 

tiles = Sin30 x 3 x .6 which will give us

tiles = .9

[NOTE: don't ask me where i got .03 from hole height, all values here are false numbers, we just pretend them to be that way, since we're here not for the values, but how to compute our aims]

i'm done, please do comment if i explained something wrong so i can change it..

see you around! :)