Server Side Programming Articles - Page 990 of 2650

To divide data frame row values by row maximum excluding 0 in R, we can follow the below steps −First of all, create a data frame.Then, use apply function and if else function to divide the data frame row values by row maximum excluding 0.Create the data frameLet's create a data frame as shown below − Live Demox

imageaffinematrixget() is an inbuilt function in PHP that is used to get an affine transformation matrix. This function is often used in linear algebra and computer graphics.Syntaxarray imageaffinematrixget(int $type, mixed $options)Parametersimageaffinematrixget() accepts only two parameters: $type and $options.$type − The $type parameter specifies the integer to IMG_AFFINE constants.IMG_AFFINE_TRANSLATEIMG_AFFINE_SCALEIMG_AFFINE_ROTATEIMG_AFFINE_SHEAR_HORIZONTALIMG_AFFINE_SHEAR_VERTICAL$options − If type is IMG_AFFINE_TRANSLATE or IMG_AFFINE_SCALE, options has to be an array with keys x and y, both having float values. If type is IMG_AFFINE_ROTATE, IMG_AFFINE_SHEAR_HORIZONTAL or IMG_AFFINE_SHEAR_VERTICAL, options has to be a float specifying the angle.Return ValuesIt returns an affine transformation matrix, an array with keys from 0 to 5 ... Read More

imageantialias() is an inbuilt function in PHP that is used to check whether antialias function is used or not. It activates the fast drawing anti-aliased methods for lines and wired polygons. It works only with true-color images and it doesn't support alpha components.Syntaxbool imageantialias($image, $enabled)Parametersimageantialias() takes two parameters: $image and $enabled.$image − The $image parameter is a GdImage object and an image resource that is returned by the image creation function imagecreatetruecolor.$enabled − The $enabled parameter is used to check whether antialiasing is enabled or notReturn Valuesimageantialias() returns True on success and False on failure.Example 1OutputRead More

imageconvolution() is an inbuilt function in PHP that is used to apply a 3×3 convolution matrix, using the coefficient and offset in the image.Syntaxbool imageconvolution ( $image, $matrix, $div, $offset)Parametersimageconvolution() takes four parameters: $image, $matrix, $div, and $offset.$image − This parameter is used to create the size of the image by using an image creation function such as imagecreatetruecolor().$matrix − This parameter contains an array of 3×3 matrix of floats.$div − It is used for normalization.$offset − This parameter is used to set the color offset.Return Valuesimageconvolution() returns True on success and False on failure.Example 1OutputInput PNG image before using ... Read More

imagegammacorrect() is an inbuilt function in PHP that is used to apply a gamma correction to a given Graphics Draw (GD) input image and an output gamma.Syntaxbool imagegammacorrect(resource $image, float $inputgamma, float $outputgamma)Parametersimagegammacorrect() takes three different parameters: $image, $inputgamma and $outputgamma.$image − Specifies the image to be worked.$inputgamma − Specifies the input gamma.$outputgamma − Specifies the output gamma.Return Valuesimagegammacorrect() returns True on success and False on failure.Example 1OutputInput image before using imagegammacorrect() PHP functionOutput image after using imagegammacorrect() PHP functionExplanation − In this example, we loaded the image from the local drive folder by using the imagecreatefrompng() function or we ... Read More

imageinterlace() is an inbuilt PHP function that is used to enable or disable interlace in an image. It is a method of encoding a bitmap image such that a person who has partially received it sees a degraded copy of the entire image.Interlacing an image lets users see portions of it as it loads, and it takes different forms depending on the image type. The non-interlaced JPEGs appear line-by-line. To enable interlacing on picture, we can simply call this function with the second parameter set to 1, or set to 0 (zero) to disable it.Syntaxint imageinterlace(resource $image, int $interlace)Parametersimageinterlace() takes ... Read More

imagesetpixel() is an inbuilt function in PHP that is used to set a single pixel at the listed coordinate.Syntaxbool imagesetpixel(resource $image, int $x, int $y, int $color)Parametersimagesetpixel() accepts four parameters: $image, $x, $y and $color.$image − Specifies the image resource to work on.$x − Specifies the x-coordinate of the pixel.$y − Specifies the y-coordinate of the pixel.$color − Specifies the color of the pixel.Return Values −imagesetpixel() returns True on success and False on failure.Example 1OutputExample 2Output

imagesetthickness() is an inbuilt function in PHP that is used to set the thickness for line drawing.Syntaxbool imagesetthickness($image, $thickness)Parametersimagesetthickness() accepts two parameters− $image and $thickness.$image − This parameter is returned by an image creation function such as imagecreatetruecolor(). It is used to create the size of an image.$thickness − This parameter sets the thickness in pixel.Return Valuesimagesetthickness() returns True on success and False on failure.Example 1OutputExample 2Output

imagestringup() is an inbuilt function in PHP that is used to draw an image vertically.Syntaxbool imagestringup ($image, $font, $x, $y, $string, $color)Parametersimagestring() accepts six parameters: $image, $font, $x, $y, $string, and $color.$image − The $image parameter uses imagecreatetruecolor() function to create a blank image of given size.$font − The $font parameter is used to set the font-size values from 1, 2, 3, 4, and 5 for inbuilt fonts or other font identifiers registered with imageloadfont() function.$x − Holds the position of the font in the horizontal X-axis, upper leftmost corner.$y − Holds the position of the font in the vertical ... Read More

imagestring() is an inbuilt function in PHP that is used to draw a string horizontally.Syntaxbool imagestring($image, $font, $x, $y, $string, $color)Parametersimagestring() accepts six different parameters − $image, $font, $x, $y, $string, and $color.$image − The $image parameter uses imagecreatetruecolor() function to create a blank image in the given size.$font − The $font parameter is used to set the font size values from 1, 2, 3, 4, and 5 for inbuilt fonts.$x − Holds the position of the font in the horizontal X-axis, upper leftmost corner.$y − Holds the position of the font in the vertical Y-axis, topmost corner.$string − The ... Read More