ndvi calculation

When Excel establishes a financial report, it is usually necessary to calculate the relevant data, which is where we use the Excel program to facilitate the language. In the calculation of data, you need to establish a formula to achieve, and in the use of the formula, you need to refer to the value of the cell to calculate, then in Excel how to use the calculation formula for the operation? The following s

These two days help Zhang Xreview the code of the Amountformat class, which involves the amount conversion and display of long (minutes), double (meta) data types. Since there are rules in the findbugs that do not allow the use of float and double data types to calculate the amount, you can say the specification of the amount calculation in the program: 1. All amounts involved in decimal are calculated using BigDecimal. 2. When creating BigDecimal

We all know that in the JS string length is not divided into English characters, each character is counted as a length, this and PHP strlen () function is not the same. The strlen () function in PHP GBK each 2 of the Chinese characters according to the character set, adding each of the UTF-8 characters to 3. Some children's shoes may ask, why to calculate the actual length? Mainly to match the length of the database, such as the GBK database a field is varchar (10), then the equivalent of 5 ch

Formula pai=4*∫10dx/(1+X2) The [0.1] is divided into 10 equal parts, which are calculated separately by two methods. ======================================================= Class Work2 {public static void main (String args[]) {Double h = 0.1;//parameter H double m1 = 0;//complex trapezoid sum sum double n = 10; Double i=0;//final result double h_2 = 0.2; Double m = 5;//Because of n=2m.n=10, so m=5 double s1=0;//parabolic first array summation double s2=0;//complex parabola second array summat

Recently learning PHP, a friend asked the time of the calculation, at this time I thought of the Delphi and MSSQL computing functions, they are very convenient to use, but check the PHP manual did not find a similar time calculation function, through the web-inspired and self test, or find a simple way to achieve Specifically as follows: 1> as we know the start time, we need to add a time to get a result

keywords on the site. Because it is not the official Baidu tool, so some of the keywords are not logged to the database, so may not be able to query some of the keywords. Data store Table: 　　 By observing, the above n value generally takes the number of the first 50 names. 2, Baidu IP number range calculation method: When we search pregnant women's radiation-proof clothing site "Www.91ffs.net", the program will be on the table all the

Transferred from: http://blog.csdn.net/liyaohhh/article/details/52115638 Caffe Source Learning: Softmaxwithloss In the Caffe Softmaxwithloss is composed of two parts, softmax+loss composition, in fact, is mainly to caffe the framework of the extensibility. The expression (1) is a softmax computation expression, and (2) is the expression of the computation loss of Sfotmaxloss. In Caffe, the inputs and outputs of each layer are computed separately, and then the data results are passed back and t

) calculation can be used for AC level measurement instruments, dbv-to 1 kv 0 db;dbw-to 1 Watts 0 DB.Generally read out how many DB, it will not be converted into voltage, sound pressure and other physical values, professionals can understand. Only on very few occasions is it to be converted. Simply substituting the formula: 10*A/20 (or A/10) *d0 calculation. A is a readout of the decibel value, the D0 is a

Tags: transition validation participates in sys BER data art ROM date--about whether NULL participates in the calculation in the Oracle database, and is validated,With TD as (Select null id,1 name from dual),TD1 as(Select null id,2 name from dual) SELECT * from TD, TD1 where NVL (td.id, ' 0.00 ') = ' 0 ' Select ' 1 ' | | ' 0.1 ' from dualNumberNumber, CharSelect To_char (3333.00, ' 999,999,009.00 ') from dualTo_char;To_date;To_number;3333.00Select To_

Calculation formulaThe savings deposit interest rate is stipulated by the national unification, the People's Bank of China listed notice. Interest rate is also known as interest rates, is a certain date of the ratio of the amount of the principal, generally divided into annual interest rate, monthly interest rate, three of the daily interest rate. The annual interest rate is expressed as a percentage, the monthly interest rate is expressed in thousand

Real NumberAlso knownFloating Point Number. Floating PointThe decimal point is not fixed.Number of pointsThat is, the decimal point is fixed. IntegerIt can be seen asA special number of points, that is, the decimal point is at the end.. AverageFloating Point NumberA bit like scientific notation, including:Symbol bit,IndexAndThe ending part. In C #, there are three types of real-time variables: float, double, and decimal. Decimal has two important points:First, decimal is still a flo

Use of the Let command[Email protected] shell]# i=2[[email protected] shell]# let i=i+8[Email protected] shell]# echo $i10[Email protected] shell]# i=i+8[Email protected] shell]# echo $i10+8[Email protected] shell]#It can be seen from the above that if you do not use let, it is not calculated, we think of our calculation formula as a string to useUsage of the expr commandThe expr command is generally used for integer values, but can also be used in st

Python is an object-oriented, dynamic programming language with a very concise and clear syntax that is suitable for accomplishing a variety of high-level tasks. It can be used to quickly develop program scripts or to develop large-scale software.With the development of NumPy, SciPy, Matplotlib, Enthoughtlibrarys and many other libraries, Python is becoming more and more suitable for scientific computing and high-quality 2D and 3D images. Compared with the most popular business software matlab i

of the polynomial by N, we have the following a Lgorithm for computing Pn (x):p = a[n]for k in range(1, n+1): p = a[n-k] + (x - xData[n-k])*pCoefficientPn">Pn">PnForcing a polynomial through each data point:yi=Pn(xi)">yi=Pn(xi)">YI=PN (xi),i=0,1,...,n">i=0,1,...,n">i=0,1,..., N。 The following equation occurs at the same time: Introducing the concept of mean difference (divided differences) Then there are: Forn=4">n=4">n=4, the manual calculation f

As we all know, in Excel tables, we can calculate various formulas for the input data. The table we inserted in Word 2007 also makes it easy to do some simple calculations on the data in the table and converts the data into the desired format. First, data calculation Take the table shown in Figure 1 as an example, we need to calculate the sum of each person and the average per quarter. Figure 1 Average First position the mouse over the

Some netizens have already got the WPS version of the new engine, and are pleasantly surprised to find that the form in the text can be easily calculated. Or, after looking at a simple table-counting button on a common work bar, you will find that the table calculation function is too weak to calculate the sum, average, maximum, and minimum values. In fact, the WPS text has been fully prepared for more complex computations, just not shown in the in

) Tag Selector "such as: h1", pseudo-elements "such as:: after" number (=C) Ignore "*" Selector Although pseudo-classes (such as: hover) participate in the calculation of CSS precedence, ":not" does not participate in calculations. The precedence within the HTML style attribute is described in CSS2.1 (it does not directly participate in the calculation of the priority in the browser implemen

//JS calculation two time difference //StartDate: Start time, EndDate: End Time (time format: 2018-5-18 11:51:40 string) functionCALDATEDIFFFN (StartDate, endDate) {//the number of milliseconds for the time difference varMillsecsdiff =NewDate (endDate). GetTime ()-NewDate (startdate). GetTime (); //calculate the difference in days varDaysdiff = Math.floor (Millsecsdiff/(24 * 3600 * 1000)); //calculate the number of hours var

The double type and float type are primarily designed for use in scientific and engineering calculations and are used for binary floating-point calculations. For the general calculation is usually inaccurate results, so for the ordinary floating-point addition and subtraction, the solution needs to use Int,long,bigdecimal to calculate. 1. Calculate the problem?The calculation results are as follows:Obviousl

PHP date formatting and date calculation as well as when getting previous week, month tail datePHP date formatting Sample code: /** * Format time * $type: Type * $strDate: Time string to process * * Year y: four-digit year y: two-bit year * Month M: two-digit month N: one digit month Part M: English month * Date D: Two digit date J: one digit Date D: English date *: H, min: I, SEC: s **/public Function getformatdate ($type = 1, $strDat E=