matlab-plot.json

{

    "plot" : {
        "prefix" : "plot",
        "body" : [
            "plot(${1:x},${2:y},'LineWidth',${3:1},'LineStyle','${4:-}','MarkerSize',${5:10});"
        ],
        "description": "plot with options"
    },   

    "plotFun" : {
        "prefix" : "plotFun",
        "body" : [
            "fh = ${1:@(x)sin(pi*x)./(pi*x)};",
            "fplot(fh,[${2:-10} ${3:${2/.*/${strAbs($0)}/}}],'-','LineWidth',1,'MeshDensity',23);",
            "title(${4:regexp(func2str(fh),'(?<=@\\(.*?\\)).*','match','once')});",
            "xlabel(${5:regexp(func2str(fh),'(?<=\\().*?(?=\\))','match','once')});",
            "grid on;"
        ],
        "description": "plot function"
    },           

    "plotFunSurf" : {
        "prefix" : "plotFunSurf",
        "body" : [
            "fh = ${1:@(x,y)sin(pi*sqrt(x.^2+y.^2))./(pi*sqrt(x.^2+y.^2))};",
            "fsurf(fh,[${2:-5} ${3:${2/.*/${strAbs($0)}/}} ${4:$2} ${5:$3}],'MeshDensity',35,'ShowContours','${6|off,on|}');",
            "title( regexp(func2str(fh),'(?<=@\\(.*?\\)).*','match','once'));",
            "xlabel(regexp(func2str(fh),'(?<=\\().*?(?=,)','match','once'));",
            "ylabel(regexp(func2str(fh),'(?<=,).*?(?=\\))','match','once'));",
            "grid on;"            
        ],
        "description": "plot 3D function surface"
    },            
    
    "plotFunContour" : {
        "prefix" : "plotFunContour",
        "body" : [
            "fh = ${1:@(x,y)exp(-(x/3).^2-(y/3).^2)+exp(-(x+2).^2-(y+2).^2)};",
            "fcontour(fh,[${2:-5} ${3:${2/.*/${strAbs($0)}/}} ${4:$2} ${5:$3}],'MeshDensity',71,'Fill','${6|off,on|}');",
            "title( regexp(func2str(fh),'(?<=@\\(.*?\\)).*','match','once'));",
            "xlabel(regexp(func2str(fh),'(?<=\\().*?(?=,)','match','once'));",
            "ylabel(regexp(func2str(fh),'(?<=,).*?(?=\\))','match','once'));",
            "grid on;"            
        ],
        "description": "plot 3D function contour"
    },                

    "plotGridContourf" : {
        "prefix" : "plotGridContourf",
        "body" : [
            "[~,h] = contourf(${1:X},${2:Y},${3:Z});",
            "set(h,'ShowText','on');",
            "set(h,'TextStep',get(h,'LevelStep')*2);",
            "set(h,'LineWidth',2);",
            "colormap( (3*colormap+1)/4 );"
        ],
        "description": "grid contour and gradient plot"
    },    


    "plotGridContourGradient" : {
        "prefix" : "plotGridContourGradient",
        "body" : [
            "contour(${1:X},${2:Y},${3:Z}); hold on;",
            "[D$1,D$2] = gradient($3);",
            "quiver($1,$2,D$1,D$2); hold off;"
        ],
        "description": "grid contour and gradient plot"
    },    

    "plotGridMeshCurvature" : {
        "prefix" : "plotGridMeshCurvature",
        "body" : [
            "mesh(${1:X},${2:Y},${3:Z},del2(${3:Z}));"
        ],
        "description": "grid mesh with curvature colorization"
    },

    "evalGridSurf" : {
        "prefix" : "evalGridSurf",
        "body" : [
            "fh = ${1:@(x,y)sin(pi*sqrt(x.^2+y.^2))./(pi*sqrt(x.^2+y.^2))};",
            "rng = ${2:5}; % symetric grid range",
            "ngr = ${3:100}; % number of points in each dimension",
            "[${4:X},${5:Y}] = meshgrid( ...",
            "\tlinspace(-rng,rng,ngr), ...",
            "\tlinspace(-rng,rng,ngr) );",
            "$6 = zeros(size($4));",
            "for i = 1 : size($4,1)",
            "\tfor j = 1 : size($4,2)",
            "\t\t${6:Z}(i,j) = fh( $4(i,j), $5(i,j) );",
            "\tend",
            "end",
			"surf($4,$5,$6);",
            "xlabel('x');",
            "ylabel('y');"
        ],
        "description": "grid evaluation and surface plot"
    },

    "evalGridContourf" : {
        "prefix" : "evalGridContourf",
        "body" : [
            "fh = ${1:@(x,y)sin(pi*sqrt(x.^2+y.^2))./(pi*sqrt(x.^2+y.^2))};",
            "rng = ${2:5}; % symetric grid range",
            "ngr = ${3:100}; % number of points in each dimension",
            "[${4:X},${5:Y}] = meshgrid( ...",
            "\tlinspace(-rng,rng,ngr), ...",
            "\tlinspace(-rng,rng,ngr) );",
            "$6 = zeros(size($4));",
            "for i = 1 : size($4,1)",
            "\tfor j = 1 : size($4,2)",
            "\t\t${6:Z}(i,j) = fh( $4(i,j), $5(i,j) );",
            "\tend",
            "end",
            "[~,h] = contourf($4,$5,$6);",
            "set(h,'ShowText','on');",
            "set(h,'TextStep',get(h,'LevelStep')*2);",
            "set(h,'LineWidth',2);",
            "colormap( (3*colormap+1)/4 );",
            "xlabel('x');",
            "ylabel('y');"
        ],
        "description": "grid evaluation and contourf plot"
    },
    
    "plotAnnotation" : {
        "prefix" : "plotAnnotation",
        "body" : [
            "title('${1:Plot Title}');",
            "xlabel('${2:x axis label [units]}');",
            "ylabel('${3:y axis label [units]}');",
            "grid ${4|on,off|};"
        ],
        "description": "plot annotation"
    }    

}