pm2.5的处理以及作图

The time series harmonic decomposition method fully considers the dual characteristics of vegetation growth periodicity and data itself when reconstructing images, and can reconstruct time series NDVI images with vegetation frequency curves representing different growth periods to truly reflect the regularity of vegetation periodic changes

利用savitzky-golay实现数据平滑滤波处理，原理是取滤波点处左右各N点，共N+1点进行拟合，之后利用最小二乘法确定相关系数，从而得到滤波点处最后的数值。可推广至二维应用

ENVI气溶胶反演及云检测源程序.云检测工具是扩展工具，该工具实现对反射率和发射率的合成文件进行去云处理，将modis_cloud.sav文件放在ENVI 5.0安装目录下的Extensions文件夹下，重启ENVI即可看到modis_cloud工具。气溶胶反演工具（modis_aerosol_inversion.sav）也是扩展工具，放在ENVI5.0安装目录下的Extensions文件夹下重启ENVI即可。

NDVI时间序列谐波分析法(Harmonic Analysis of NDVI Time-Series)（简称Hants ）对时间序列数据进行平滑。该方法是一种新的物候分析方法，可用于定量化的监测植被动态变化。其核心算法是傅里叶变换和最小二乘法拟合, 即把时间波谱数据分解成许多不同频率的正弦曲线和余弦曲线，从中选取若干个能够反映时间序列特征的曲线进行叠加，以达到时间序列数据的重建目的。(The NDVI Time Series Harmonic Analysis of NDVI Time Series (Hants) smoothes Time Series data. This method is a new phenological analysis method, which can be used for quantitative monitoring of dynamic changes of vegetation. The core algorithm is the Fourier transform and least squares fitting, namely the time spectrum data is decomposed into many different frequency sine curve and cosine curve, selected from several can reflect the characteristics of time sequence curve superposition, the reconstruction of the time series data in order to achieve purpose.)

QQ幻想小狼外挂2.31源码,很不错的,无需多说. (QQ Fantasy小狼source plug-in 2.31, very good, no need to say any more.)

说明：  SEBAL模型估算区域蒸散量。其中过程变量地表温度、净辐射，土壤热通量，感热通量及区域蒸散发的python代码(SEBAL model was used to estimate regional evapotranspiration. The python codes of process variables, such as surface temperature, net radiation, soil heat flux, sensible heat flux and regional evapotranspiration, are given)

包括影像预处理，叶绿素反演，水污染监测等功能(Including image preprocessing, water pollution monitoring and other functions)

ENVI格式多光谱数据批量求平均值并保存成tif格式文件输出(Batch average of ENVI multispectral data and save it as TIF file output)

说明：  IDL可视化分析与应用（随书程序） 西北工业大学出版 (IDL and application of visual analysis)

说明：  为你的IDL交互界面添加启动画面，内含调用说明(Add a splash screen to your IDL interface)