tiff 相关问题

TIFF（最初代表标记图像文件格式）是用于存储图像的文件格式。

盖特夫无数据值不一致问题

为什么我的.tif文件中的某些值似乎是没有数据值的，但尚未识别，即使它们匹配元数据中指定的无数据值？

tiff

回答 1 投票 0

QGIS栅格生成具有定义的网格

在QGIS中有一种定义网格并为每个网格单元生成单独的TIFF文件的方法吗？像在此问题上：打开XYZ瓷砖 - > OpenStreetMap。使用工具来定义网格对兴趣...

grid raster tiff qgis

回答 1 投票 0

使用system.drawing

我通过从图像创建图形来编辑乘法TIFF，但是我遇到了错误消息：

c# winforms tiff system.drawing

回答 3 投票 0

使用ghostscript + ImageMagick -300 dpi，8位深度

DPI设置为300，带有Ghostscript，以及ImageMagick的8位深度。该文件以96 dpi的40位返回。

c# pdf imagemagick tiff

回答 1 投票 0

在考虑Na Pixels时进行多个射手

# Load necessary libraries library(raster) library(rgdal) # Set the path to your folder containing the .tif files folder_path <- "D:/A/LST/mosaic_clipped_reprojected/test" # List all .tif files in the folder tif_files <- list.files(folder_path, pattern = "*.tif$", full.names = TRUE) # Initialize variables to store the sum of rasters and valid count total_sum <- NULL valid_count <- NULL # Set NoData value for MODIS LST data nodata_value <- -9999 # Loop through all the tif files and process them for (tif_file in tif_files) { # Read the raster file raster_data <- raster(tif_file) # Set the NoData value for the raster (this step ensures NoData values are handled correctly) raster_data[raster_data == nodata_value] <- NA # Convert NoData to NA # Initialize total_sum and valid_count on the first iteration if (is.null(total_sum)) { total_sum <- raster_data valid_count <- !is.na(raster_data) # Create a mask for valid data (TRUE = valid, FALSE = NA) } else { # Add current raster data to the total_sum, and count valid pixels total_sum <- total_sum + raster_data valid_count <- valid_count + !is.na(raster_data) # Count valid pixels (add 1 for valid, 0 for NA) } } # After all rasters are processed, replace invalid count (0 values) with NA to avoid dividing by 0 valid_count[valid_count == 0] <- NA # Calculate the daily average by dividing the total sum by the valid count for each pixel # This ensures that only valid pixels contribute to the sum and the division. daily_average <- total_sum / valid_count # Define the reference raster for resampling (choose one of your original rasters) reference_raster <- raster(tif_files[1]) # Example: using the first raster file as reference # Resample the daily average to the reference raster using bilinear interpolation resampled_daily_average <- resample(daily_average, reference_raster, method = "bilinear") # Define the output file path for the daily average raster output_file <- "D:/A/LST/AnnualAvgLST/daily_average_resampled_test1.tif" # Write the resampled daily average raster to a new file writeRaster(resampled_daily_average, output_file, format = "GTiff", overwrite = TRUE) # Print message to indicate the result cat("Resampled daily average raster has been saved to:", output_file, "\n")

r tiff r-raster no-data r-modis

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将PDF转换为TIFF以获取传真

java pdf asterisk tiff fax

回答 0 投票 0

使用r

任何人都知道如何使用R中的Magick软件包从16位TIFF图像中获取每个通道（RGB）的像素值？目前，我正在使用Mathematica执行此操作，因为我合作...

r tiff magick

回答 5 投票 0

TIFF图生成和压缩：R与Gimp vs. Irfanview vs. Photoshop文件大小

<-volcano zf=10 #zoom factor tiff("Volcano.tif", width=1800*zf, height=900*zf, res=175*zf, compres...

r tiff image-compression